The publishing and editorial teams would like to thank the following, for their invaluable service as 2021 reviewers for this journal. We are very grateful for the contributions made. With their help, the journal has been able to publish such high-quality articles:

• ., Vidya
• Ab. Wahab, Mastura
• Abad, Cristina
• Abdelkareem, Reda
• Abdi, Mansoureh
• Abdollahbeigi, Bentolhoda
• Abdollahi, Ahmad
• Abdullah , Muhammad Ibrahim
• Abdullah, Abdullah
• Abdullah, Nor Liza
• Abdulrahman, Muhammad
• Abedin, Mohammad Zoynul
• Abhayawansa, Subhash
• Aboelmaged, Mohamed
• Aboutalebi, Reza
• Abrar, Muhammad 
• Abreu, Rute
• Abubakar, A. Mohammed
• Adams, Mary
• Addo, Kwabena
• Adler, Terry
• Adobor, Henry
• Agarwal, Raveesh
• Aghaey, Alireza
• Agliata, Francesco
• Agrawal, Amit
• Agrawal, Nishant
• Agredo, Martha
• Agustini, Maria Yosephine Dwi Hayu
• Agyabeng-Mensah, Yaw
• Agyemang, Martin
• Ahmad, Ahmad Bayiz
• Ahmad, Moid
• Ahmed, Ishfaq
• Ahn, Shinhye
• Ainin, Sulaiman
• Ajina, Ayman
• Akbar, M.
• Akhavan, Peyman
• Akram, Zubair
• Akter, Shahriar
• Akter, Tania
• Al-Dah, Bilal
• Al-Shammari, Hussam
• Al-Shammari, Marwan
• Alabau-Tejada, Nuria
• Alam Kazmi, Syed Hasnain
• Alam, S.M. Shafiul
• Alat, Priya
• Alhiyari , Ahmed 
• Ali, Anees
• Ali, Rizwan
• Ali, Syed
• Alidrisi, Hisham
• Almarayeh, Taha
• Almeida, Rita
• Aloini, Davide
• Alonso-Almeida, Maria Del Mar
• Alos-Simo, Lirios
• Alpkan, Lutfihak
• Alstete, Jeffrey
• Altinay, Levent
• Alva, Edgar
• Alvarez-Torres, Francisco
• Alves, Helena
• Amarakon, Upamali
• Amin, Muslim
• Ammirato, Salvatore
• Amoako, George
• Amoozad Mahdiraji, Hannan
• Anand, Amitabh
• Anchor, John
• Andreopoulou, Zacharoula
• Anjum, Bimal
• Anning-Dorson, Thomas
• Anuradha, Arthanari
• Arena, Claudia
• Arend, Richard
• Argiles Bosch, Josep Maria
• Arikan, Ilgaz
• Arraya, Marco
• Arribas, Ivan
• Arshad, Muhammad
• Arshad, Muhammad
• Asarian, Mohammad
• Asgari, Elham
• Atan, Arzu
• Ayande, Alpha
• Azadi, Mohammad Hossein
• Azan, Wilfrid
• Azar, Adel
• Azevedo, Tânia Cristina
• Baba, Vishwanath
• Babaee Tirkolaee, Erfan
• Bagire, Vincent
• Bai, Xuan
• Balan, Carmen
• Baležentis, Tomas
• Ballé, Michael
• Ballestra, Luca Vincenzo
• Baloch, Muhammad Saad
• Balodi, Krishna
• Banaitiene, Nerija
• Banaitis, Audrius
• Banerjee, Soumendra
• Bannister, Frank
• Bannò, Mariasole
• Bansal, Shashank
• Bao, Xinzhong
• Barakat, Mahmoud
• Barani, Omid
• Barbati, Maria
• Barbuta-Misu, Nicoleta
• Barrales Molina, Vanesa
• Barreto, Tais
• Baruk, Agnieszka
• Basha, Damto
• Bashir Bugaje, Idris
• Bassi, Antonio
• Battaglia, Daniele
• Battisti, Enrico
• Bazzy, Joshua
• Behl, Abhishek
• Belmonte-Ureña, Luis Jesús
• Beltrame, Federico
• Ben Salem, Anis
• Bendickson, Joshua
• Benson, Joy
• Beritelli, Pietro
• Bezemer, Pieter-Jan
• Bhadauria, Shraddha
• Bhasin, Sanjay
• Bhaskar, Hari Lal
• Bhatti, Sabeen 
• Bhupendra, Kumar
• Bilal, Adil
• Bilic, Ivana
• Blanco-González, Alicia
• Blazsek, Szabolcs
• Bloodgood, James
• Bocconcelli, Roberta
• Bogatyreva, Karina
• Bojovic, Nebojsa
• Bolisani, Ettore
• Bonomi Savignon, Andrea
• Boronat-Navarro, Montserrat
• Bota-Avram, Cristina
• Brady, Malcolm
• Bresciani, Stefano
• Breznik, Kristijan
• Brionés-Peñalver, Antonio-Juan
• Brueggen, Alexander
• Brunetta, Federica
• Brunsson, Karin
• Bryant, Peter
• Buchanan, Julia
• Bunning, Richard
• Burch, Gerald
• Burgess, Slyvia 
• C, Ganeshkumar
• Caferra, Rocco
• Calik, Eyup
• Callefi, Jéssica
• Çaloğlu Büyükselçuk, Elif
• Cambrea, Domenico Rocco
• Cammarano, Antonello
• Campopiano, Giovanna
• Campos-Climent, Vanessa
• Cannavacciuolo, Lorella
• Canonico, Paolo
• Cardow, Andrew
• Carrasco Monteagudo, María Inmaculada
• Carson, Jack
• Castaño-Martínez, Maria-Soledad
• Castek, Ondrej
• Castro Herrera, Diana
• Catalão-Lopes, Margarida
• Cater, Barbara
• Catuogno, Simona
• Cavalcanti Junqueira, M Isabella
• Cavicchi, Caterina
• Çetin, Mehmet
• Cha, Wonsuk
• Chada, Swechha
• Chatterjee, Manali
• Chatterjee, Susmita 
• Chaudhary, Sheetal
• Chauhan, Chetna
• Chauhan, Vinit
• Che Azmi, Anna
• Chen, Hsiang-Lan
• Chen, Ja-Shen
• Chen, Jau-Rong 
• Chen, Junlin
• Chen, Qinglan 
• Chen, Shang-Yu
• Chen, Shiuann-Shuoh
• Chen, Zhi
• Chen, Zhixiang
• Cheng, Calvin
• Cheng, Kuo-Tai
• Chiang, Yen-Ju
• Chiarini, Andrea
• Chirico, Antonio
• Cho, Chia-Ching
• Chopra, Meenu
• Chou, Sheng-Fang
• Chouki, Mourad
• Chowdhury, Arup
• Christiansen, John
• Chuang, Cheng-Min
• Chuang, Ta-Tao
• Cillo, Valentina
• Cirillo, Alessandro
• Coelho, Arnaldo
• Coombes, Susan
• Correa, Victor
• Cristofaro, Matteo
• Cros, Sophie
• Crous, Cornelie
• Cuervo Carabel, Tatiana
• Curseu, Petru
• D'amato, Antonio
• Da Rocha, Angela
• Da Silva, Leonardo Aureliano
• Dabestani, Reza
• De Almeida, Jônatas
• De Luca, Patrizia
• De Masi, Sara
• De Nito, Ernesto
• De Peiris, T Nayomi S
• Deilami,  Kaveh 
• Del Vecchio, Pasquale
• Delbufalo, Emanuela
• Demartini, Maria Chiara
• Demirel, Demokaan
• Devkota, Niranjan
• Dhir , Amandeep 
• Di Carlo, Emliano
• Di Vaio, Assunta
• Diab, Dalia
• Dias, Claudia
• Díaz-Díaz, Nieves L.
• Dicuonzo, Grazia
• Dimitrova, Anna
• Ding, May-Ching
• Dixit, Jitendra
• Do Paço, Arminda
• Do Thi Kim, Hau
• Doe, Joshua
• Dolci, Pietro
• Doruk, Ömer Tuğsal
• Drago, Carlo
• Dubey, Rameshwar
• Dugar, Anurag
• Dumitrasco, Marica
• Duran, Ignacio 
• Dutot, Vincent
• Dutta Gupta, Sangita
• Dwivedi, Manish
• E-Vahdati, Sahar
• Eachempati, Prajwal
• Elam, Amanda
• Eldomiaty, Tarek
• Elgharbawy, Adel
• Elia, Gianluca
• Eschenbach, Sebastian
• Espinoza, Eduardo
• Estrada De La Cruz, Marina
• Etogo, Gabriel
• Eynolghozat, Mohammad
• Faccer, Kristy
• Falcão, Pedro
• Faldetta, Guglielmo
• Fanelli, Simone
• Fang, Wenchang
• Fantazy, Kamel
• Farías, Pablo
• Farrukh, Muhammad
• Farzipoor Saen, Reza
• Fassin, Yves
• Fedotova, Gilyan
• Felicetti, Alberto Michele
• Felício, J. Augusto
• Fernandes, Cristina
• Ferraris, Alberto
• Ferreira, Marisa
• Ferreira, Pedro
• Fleck, Denise
• Fontoura, Pedro
• Fortezza, Fulvio
• Franco, Mário
• Freita, Antonio
• Friday-Stroud, Shawnta
• Friedl, Christian
• Gallego-Alvarez, Isabel
• Galvagno, Marco
• Gani, Abdul
• Garcia-Sanchez, Isabel-Maria
• Garg, Naval
• Garry, Tony
• Gazzola, Patrizia
• Ge, Jianhua
• Gervasi, Deborah
• Ghatasheh, Nazeeh
• Gheith, Mohamed
• Giacosa, Elisa
• Giakoumelou, Anastasia
• Gil, Alfonso J.
• Gilbert-Saad, Antoine
• Gitto, Simone
• Glinka, Beata
• Glyptou, Kyriaki
• Gokarn, Samir
• Gomes, Carlos
• Gomes, Luiz F.
• Govekar, Michele
• Goyal, Rita
• Graziano, Elvira Anna
• Grechi, Daniele
• Gregorich, Marina
• Griffith, Jakari
• Grigoroudis, Evangelos
• Grimaldi, Francesco
• Grisham, Thomas
• Gu, Qinxuan
• Guan, Xin-Hua
• Gudes, Ori
• Gullifor, Daniel
• Guo, Hai
• Gupta, Srikant
• Haberberg, Adrian
• Hacklin, Fredrik
• Haleem, Fazli Haleem
• Hamilton, Francis
• Hamilton, John
• Hammami, Samir
• Han, Jun
• Han, Lu
• Hao, Qingmin
• Hardwick, Jialin
• Hasan, Md. Morshadul 
• Hayek, Mario
• Haynie, Jeffrey
• Heavey, Colm
• Hinojosa, Amanda
• Hinterhuber, Andreas
• Hiremth, Chetan
• Hoffmann, Sabine H
• Holzmann, Vered
• Hong, Jacky
• Hossain, Md Shamim
• Hosseini Arian, Nazanin
• Hou, Bojun
• Hua, Wei
• Huang, Yan
• Hudnurkar, Manoj
• Hui Fun  , Yu
• Hull, Clyde
• Humphreys, John
• Hundal, Shabnamjit
• Hung, Tsang-Kai
• Hunt, Richard
• Hynes, Briga
• Ic, Yusuf Tansel
• Idris, Aida
• Imran, Muhammad Kashif
• Inegbedion, Henry
• Ishaq, Muhammad Ishtiaq
• Islam, Talat
• Isokpehi, Raphael
• Izzo, Filomena
• J, Sreepriya
• Jalali, Alireza
• Jang, Jichul
• Jang, Seung Hoon
• Jaye, Chrystal
• Jenatabadi, Hashem Salarzadeh
• Jeong, Nara
• Jia, Qiong
• Jia, Yankun 
• Jiang, Wei
• Jiang, Xueting
• Jing, Shuwei
• Joo, Sunghoon
• Joseph, Rojers
• Junxia, Wang
• Kamalaldin, Anmar
• Kang, Mingu
• Kang, Shinhyung
• Kapuria , Cheshta
• Kar, Arpan
• Karna, Amit
• Kashiramka, Smita
• Kashiwagi, Jacob
• Kaur, Jaspreet
• Kesting, Peter
• Khalifa, Azaddin
• Khan, Shamila
• Kherrazi, Soufiane
• Khorshidi, Masoud
• Kiefer, Kip
• Kim, Hyun Gon
• Kiridena, Senevi
• Klishevich, Daria
• Kodwani, Amitabh Deo
• Komaki, Muhamed
• Krajcsák, Zoltán
• Kubatova, Jaroslava
• Kulshreshtha, Kushagra
• Kumar, Anil 
• Kumar, Pradeep
• Kumar, Rajiv
• Kunc, Martin
• Kunisch, Sven
• Kusi-Sarpong, Simonov
• Laffranchini, Giacomo
• Lakomski, Gabriele
• Lang, Le Dang
• Lavan, Helen
• Law, Kuok Kei
• Lechner, Christian
• Lee, Bill
• Lee, Heng Wei
• Lee, Jae Hwan
• Lee, Pei-Chun
• Lee, Sam
• Lee, Yi-Hsuan 
• Leitão, João
• Lejarraga, José
• Leoni, Luna
• Lerro, Antonio
• Levanti, Gabriella
• Li, Xiaodong
• Li, Xiaodong
• Liang, Huai-Liang
• Liang, Shuang
• Liebrenz-Himes, Marilyn
• Lima, Edson
• Lin, Chen-Ju
• Lin, Chin-Lung
• Lin, Feng-Jyh
• Lin, Tsai-Fei
• Linzalone, Roberto
• Liu, Chih-Hsing 
• Liu, Tianxiang
• Liu, Wenxing
• Liuzzi, Danilo
• Lo Storto, Corrado
• Lo, Sonia
• Löfving, Malin
• Lombardi, Sara
• Longo, Maria Cristina
• Lopes, João M.
• López-Fernández, Macarena
• Lopez, Luis
• Lytovchenko, Iryna
• Lyu, Bei
• Macaulay, K Doreen
• Mackey, Jeraul
• Mackey, Jeremy
• Madichie, Nnamdi
• Madlberger, Maria
• Magistretti, Stefano
• Magno, Francesca
• Mahdavi, Iraj
• Manfield, Russell
• Mangia, Gianluigi
• Mangion, Margaret 
• Mangla, Sachin
• Manocha, Parul
• Marques, Carla 
• Martí-Ballester, Carmen-Pilar
• Martin, John
• Martínez-Martínez, Aurora
• Masrom, Maslin
• Massaro, Maurizio
• Matalamäki, Marko
• Mateo, Ricardo
• Mayo, David
• Mclain, David
• Mcneil, Stacey
• Medeiros, Mauricius
• Mehmood, Qaiser
• Mehta, Reena
• Mensah, Isaac
• Merino, Elena
• Messeni Petruzzelli, Antonio
• Messeni, Antonio
• Miao, Chao
• Micheli, Guido Jacopo Luca
• Michelini, Laura
• Mishra, Sushanta
• Mitra, Aditi
• Mittal, Shashank 
• Moghaddas, Zohreh
• Morea, Donato
• Morrar, Rabeh
• Moura, Stephanie
• Moustaghfir, Karim
• Muduli, Kamalakanta Kamalakanta 
• Mukherjee, Debmalya
• Mukherjee, Kaushik
• Mukherjee, Sujata
• Muncherji, Nina
• Murphy, Edward
• Nagy, Brian
• Nair, Beena
• Nájera-Sánchez, Juan-José
• Naqshbandi, M Muzamil
• Nazari-Shirkouhi, Salman 
• Ndlovu, Tabani
• Ndou, Valentina
• Nguyen, Thang
• Nijhof, Andre
• Nikolaeva, Ralitza
• Nirino, Niccolò
• Nobre, Farley
• Nouri, Pouria
• Nucciarelli, Alberto
• Ogrean, Claudia
• Ohana, Marc
• Okeke-Uzodike, Obianuju
• Okoli, Justin
• Oliva, Fábio
• Ordoñez De Pablos, Patricia
• Orgambídez-Ramos, Alejandro
• Packard, Mark
• Pal, Raktim
• Panda, Satya
• Panda, Swati
• Papa, Armando
• Pardo-Del-Val, Manuela
• Park, Min Jae
• Parnell, John
• Parsad, Chandan
• Pati, Surya
• Pellegrini, Massimiliano
• Pellegrino, Roberta
• Peng, Jian
• Pereira, Giancarlo Medeiros
• Perello-Marin, M Rosario
• Petruzzella, Felice
• Picone, Pasquale Massimo
• Pindard-Lejarraga, Maud
• Pittz, Thomas
• Pleggenkuhle-Miles, Erin
• Plimmer, Geoff
• Poggesi, Sara
• Pratheepkanth, Pratheepkanth
• Pu, Bo
• Qiao, Zhilei
• Quan, Peng
• Quinto, Ivana
• Quoquab, Farzana
• Rahnama, Hassan
• Raimi, Lukman
• Raimo, Nicola
• Randolph, Angela
• Ranfagni, Silvia
• Rao Sahib, Padma
• Rau, Pradeep
• Redondo-Cano, Ana
• Reeves, Kingsley
• Rialti, Riccardo
• Ricciardelli, Alessandra
• Ritchie-Dunham, James
• Roberto, Michael
• Rocha, Luiz
• Rodeiro-Vargas, Carlos
• Romiani, Unes
• Romito, Stefano
• Rounaghi, Mohammad Mahdi
• Rouyer, Ellen
• Roy, Abhijit
• Roy, Santanu
• Roy, Santanu
• Roy, Vivek
• Rudin, Joel 
• Ruggiero, Pasquale
• Ruiz Vinals, Carmen
• Rutherford, Mathew 
• Ryan, James
• Rybakovas, Egidijus
• Safeer, Asif Ali
• Salehi, Mahdi
• Sallan, Jose
• Samara, Georges
• Sampaio, Carlos
• Samvedi, Avinash
• Sanan, Neeti
• Santarsiero, Francesco
• Santarsiero, Francesco
• Saurbier, Ann
• Sawalha, Ihab
• Secchi, Davide
• Secundo, Giustina
• Sehnem, Simone
• Seifried, Chad
• Sekerka, Leslie
• Seyed Kalali, Nader
• Shahin, Arash
• Shahzad, Fakhar
• Shams, S. M. Riad
• Sharma, Pooja
• Sharma, Vinay
• Shelton, Charlotte
• Shen, Chien-Wen
• Shibao, Fabio
• Shrivastava, Monica 
• Silva, Paulo
• Simha, Aditya
• Singh, Ajai
• Singh, Gurmeet
• Singh, Neha
• Singh, Reetesh
• Singhania, Monica
• Smuts, Hanlie
• Soetanto, Danny
• Sofo, Francesco
• Song, Malin
• Soni, Vivek
• Sousa, Maria Jose
• Souza Michelon, Paula De
• Spell, Chester
• Srivastava, Saurabh
• Stekelorum, Rebecca
• Stenholm, Pekka
• Stierand, Marc
• Subedi, Deepak
• Sulkowski, Adam
• Sun, Junqin 
• Sun, Laixiang
• Sunder M, Vijaya
• Sunjka, Bernadette
• Susomrith, Pattanee
• Svyantek, Daniel
• Szarucki, Marek
• Tabesh, Pooya
• Takahashi, Yutaka
• Taneja, Sonia
• Tang, Edwin
• Tani, Mario
• Tao, Weiting
• Teixeira, Fernando
• Tewari, Sumant
• Tian, Bifei
• Toumia, Oumeima
• Tovstiga, George
• Trimi, Silvana
• Troise, Ciro
• Troy, Carol
• Truhon, Stephen
• Tsachouridi, Irene
• Tu, Chiayu
• Turek, Dariusz
• Uddin, Ahmar
• Uman, Timur
• Upadhyay, Parijat
• Uyar, Ali
• Valentina Diana, Rusu
• Valeria, Stefanelli
• Van Riel, Allard
• Venkataraman, Ray
• Ventura, Marzia
• Venugopal, Aparna
• Victer, Rogerio
• Vila-Vázquez, Guadalupe
• Villanueva-Villar, Mónica
• Violi, Antonio
• Visweshvaran, Chocklingam
• Vivas, Vanina
• Volery, Thierry
• Voracek, Jan
• Vuarin, Louis
• Waleed, Mohammed
• Wall, Friederike
• Wan Mohammad, Wan Masliza
• Wang, Cizhi
• Wang, Peng
• Wang, Yueh-Chiu 
• Wang, Zhining
• Weck, Marina
• Wei, Chung-Wan
• Whiting, Rosalind
• Wilson, Shellyanne
• Windapo, Abimbola
• Woodside, Arch
• Wu, Hung-Yi 
• Wu, Jianlin
• Wu, Ming-Ho
• Wu, Pingping
• Wu, Tienhua
• Wuttichindanon, Suneerat
• Xu, Jian
• XUE, Yi-Xi
• Yadav, Sangeeta
• Yang, Feng Hua
• Ying, Fei
• Yordanova ,  Zornitsa
• Young, Nichole C. Jones
• Yu, Chuanpeng
• Yu, Chun-Hsien
• Yu, Hui-Fun
• Zacca, Robert
• Zahid, Taiba
• Zanni, Lorenzo
• Zeng, Saixing
• Zhan, Xiangdong
• Zhang, Lida L.
• Zhang, Lu
• Zhao, Nan
• Zhao, Xiaofeng
• Zhao, Xiaoping
• Zhen, Liu
• Zheng, Wenzhi
• Zicari, Adrian
• Ziemiański, Pawel
• Zimon, Grzegorz
• Ziyae, Babak
• Zollo, Lamberto
• Zubac, Angelina