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:
| Abbasian, Saeid |
| Abdur Rehman, Mohsin |
| Abson, Emma |
| Abu Bakar, Nurzehan |
| Abubakari, Aidatu |
| Acar, Vedat |
| Acikgoz, Fulya |
| Addae, John |
| Adeyinka-Ojo, Samuel Folorunso |
| Agyeiwaah, Elizabeth |
| Ahmed, Selim |
| Ahn, Jiseon |
| Akgunduz, Yilmaz |
| Akın, Mehmet |
| Akoijam, Sunildro |
| Akova, Orhan |
| Aksu, Akin |
| Aksu, Murat |
| Al Najdawi, Bashar |
| Al Sahouly, Ibrahim |
| Al-Azab, Mahmoud |
| Alakoski, Leena |
| Albayrak, Tahir |
| Ali, Azmat |
| Ali, Faizan |
| Allaberganov, Azizbek |
| AlMasalm, Samaan |
| Alvarez, Maria |
| Alves, Carlos Alberto |
| Amin, Muslim |
| Amoako, George |
| Ampong, George |
| Anak Jimbun, Joanna |
| Añaña, Edar |
| Anasori, Elham |
| Anjos, Sara |
| Antunes, Vera |
| Arici, Hasan Evrim |
| Asenova, Martina |
| Atadil, Hilmi |
| Atasoy, Burak |
| Atsiz, Ozan |
| Attaalla, Farouk |
| Au Yong, Hui Nee |
| Aureliano-Silva, Leonardo |
| Aydin, Birgul |
| Azhar, Mohd |
| Babyak, Andrew |
| Bahar, Ozan |
| Baldwin, Watson |
| Bamber, David |
| Bansal, Rajeev |
| Başer, Gözdegül |
| Bashir, Muhammad Adnan |
| Batra, Shruti |
| Baumann, Chris |
| Bavik, Ali |
| Bayat, Murat |
| Becker, Frederick |
| Belarmino, Amanda |
| Benítez-Aurioles, Beatriz |
| Benítez-Márquez, María-Dolores |
| Berezina, Katerina |
| Bhat, Aasif Ali |
| Bichler, Bernhard Fabian |
| Blankson-Stiles-Ocran, Sarah |
| Boğan, Erhan |
| Book, Laura |
| Borges Tiago, Maria Teresa |
| Brannon, David |
| Bremser, Kerstin |
| Brown, Tim |
| Bu, Naipeng |
| Bufquin, Diego |
| Bükey, Aziz |
| Busagara, Theresia |
| Caber, Meltem |
| Caesar, Livingstone |
| Çakir, Onur |
| Calhoun, Jennifer |
| Carrasqueira, Helder |
| Cartier, Elizabeth |
| Casaló, Luis |
| Cavusoglu, Muhittin |
| Çavuşoğlu, Sinan |
| Çelik, Sedat |
| Celuch, Krzystof |
| Cetin, Gurel |
| Çevrimkaya, Mustafa |
| Chakraborty, Debarun |
| Chang, Wanching |
| Chang, Wen |
| Changha, George |
| Chatterjee, Pratim |
| Cheema, Sadia |
| Chen, Tzu-Ling |
| Chen, Xianglan |
| Chen, Xiaolian |
| Cheng, Man Tat (Eddy) |
| Chhonker, Mayanka |
| Chi, Nguyen |
| Chia, Kei Wei |
| Chien, P. Monica |
| Chin, Chee Hua |
| Cho, Ray |
| Cho, SunBai |
| Choi, Danny |
| Choi, Hwansuk |
| Choong, Yuen Onn |
| Chua, Bee-Lia |
| Ciftci, Olena |
| Coetzee, Willem |
| Coghlan, Alexandra |
| Coskun, Guliz |
| Costa Filho, Bento |
| Couto, Ubaldino |
| Crespi-Vallbona, Montserrat |
| Crick, Anne Patricia |
| Croes, Robertico |
| Dandona, Dr. Anu |
| Dar, Dr. Shahnawaz |
| Das, Madhumita |
| Dash, Ajitabh |
| Datta, Amit |
| De Farias, Salomao |
| De La Mora Velasco, Efren |
| Deale, Cynthia |
| Dedeoğlu, Bekir Bora |
| Deku, Wisdom |
| Del Rosario, Peter Jerome |
| DeMicco, Frederick |
| Demirağ, Bülent |
| Demirciftci, Tevfik |
| Demirel, Altan |
| Devkota, Niranjan |
| Dimanche, Frederic |
| Ding, Li |
| Dioko, Leonardo |
| Doğan, Oğuz |
| Dogan, Seden |
| Dolasinski, Mary Jo |
| Domareski Ruiz, Thays |
| Dos Anjos, Francisco |
| Dou, Xueting |
| Douglas, Anneli |
| Dsilva, Nigel |
| Duong, Nhung |
| Dzenopoljac, Vladimir |
| Elbaz, Ahmed |
| Elsharnouby, Tamer |
| Erdem, Mehmet |
| Ertuna, Bengi |
| Estevao, Cristina |
| Falcao, Roberto P |
| Farinha, Luis |
| Fathy, Eslam |
| Fernandes, Cristina |
| Ferreira, Jorge |
| Ferreira, Luciana |
| Filimonau, Viachaslau |
| Florido-Benítez, Lázaro |
| Fondevila-Gascón, Joan-Francesc |
| Fong, Lawrence Hoc Nang |
| Foroughi, Behzad |
| Fu, Rachel |
| Fusté-Forné, Francesc |
| Fyall, Alan |
| Gandhi, Rajul |
| Gannon, Martin Joseph |
| Garg, Aashish |
| Genç, Gökhan |
| Genc, Volkan |
| Gencer, Gullu |
| Giousmpasoglou, Charalampos |
| Goh, Edmund |
| González-Rodríguez , M. Rosario |
| Gordon, Susan |
| Gunden, Nefike |
| Gupta, Sanjay |
| Hadood, Abobaker |
| Hahm, Jeeyeon |
| Hameed, Irfan |
| Hanafiah, Mohd Hafiz |
| Hanks, Lydia |
| Haryono, Cosmas |
| Hazira, Mohd |
| He, Guanming |
| He, Ping |
| Herjanto, Halimin |
| Hilliard, Tyra |
| Ho, Grace |
| Holcomb, Judy |
| Holmes, Kirsten |
| Hossain, Md Sazzad |
| Hossny, Maher |
| Hsieh, Chia-Li |
| Hsu, Fu-Sung |
| Hsu, Shih-Chieh |
| Hu, Tao |
| Huang, Arthur |
| Huang, Yinghua |
| Hudik, Marek |
| Hussain, Kashif |
| Hussien, Faten |
| Hwang, Johye |
| Ince Yenilmez, Meltem |
| Irani, Farid |
| Irimias, Anna |
| Isaac, Rami |
| Işkın, Merve |
| Israeli, Aviad |
| Ivanov, Stanislav |
| Iyengar, Anand |
| Jackman, Mahalia |
| Janjua, Zain ul Abedin |
| Jeong, EunHa |
| Jeong, Miyoung |
| Ji, Mingjie |
| Jones, Peter |
| Joshi, Gaurav |
| Joshi, Richa |
| Julião, Jorge Manuel Soares Julião |
| Kahveci, Eyup |
| Kahveci, Eyup |
| Kamal Nurzaman, Muhammad Aliff Asyraff |
| Kang, Juhee |
| Kang, Soo K. |
| Kannan, Suresh |
| Karakaş, Ayhan |
| Karakuş, Yusuf |
| Karamustafa, Kurtulus |
| Karatepe, Osman M. |
| Karim, Rashed |
| Kasekende, Francis |
| Kasim, Azilah |
| Kaurav, Rahul Pratap Singh |
| kement, uzeyir |
| Kennell, James |
| Kesgin, Muhammet |
| Khatter, Ajay |
| Khawaja, Kausar Fiaz |
| Khodadadi, Masood |
| Kim, Jungkeun |
| Kim, Minseong |
| Kim, Myung Ja |
| Kim, Yong Joong |
| Kirici Tekeli, Ezgi |
| Kizildag, Murat |
| Kladou , Stella |
| Kocak, Emrah |
| Kokkinou, Alinda |
| Kong, Haiyan |
| Koseoglu, Mehmet Ali |
| Kotsi, Filareti |
| Kreeger, Jeffery |
| Ku, Edward |
| Kubickova, Marketa |
| Küçükergin, Kemal Gürkan |
| Kumar, Dr. Anil |
| Kumar, Jeetesh |
| Kumar, Sachin |
| Kuo, Tonny |
| Kuokkanen, Henri |
| Kurniawati, Rina |
| Kusluvan, Salih |
| Kwok, Linchi |
| Kwon, Jookyung |
| Lacap, Jean Paolo |
| Lai, Tzu-Ching |
| Lashley, Conrad |
| Lee, Bo Youn |
| Lee, Hoffer |
| Lee, Jee Hye |
| Lee, Kai-Sean |
| Lee, Kiwon |
| Lee, Seonjeong Ally |
| Lee, Seung Hyun |
| Lefrid, Mohammed |
| Lei, Weng Si (Clara) |
| Leong, Choi Meng |
| Li, Jing |
| Lian, Jiunn-Woei |
| Limberger, Pablo Flôres |
| Lin, Hsin-Hung(Sean) |
| Line, Nathaniel |
| Liu-Lastres, Becky |
| LIU, Matthew |
| Liu, Shih-Hao |
| Llopis, Juan |
| Loo, Poh Theng |
| Lopez-Nicolas, Carolina |
| Low, Tiffany |
| Lubowiecki-Vikuk, Adrian |
| Mahmoud, Mahmoud Abdulai |
| Mahmud, Md. Shahed |
| Majumdar, Kakali |
| Malhotra, Neha |
| Malik, Sawsan |
| Mandal, Santanu |
| Manhas, Parikshat S |
| Marcel, Daniel |
| Marinakou, Evangelia |
| Martins, Albert |
| Mason, Alicia |
| Matos, Celso |
| Mc Leod, Michelle |
| Meera, Sethumadhavan |
| Mehta, Pooja |
| Mejia, Cynthia |
| Mendes-Filho, Luiz |
| Mesci, Muammer |
| Mikulić, Josip |
| Milwood, Pauline |
| Minasi, Sarah Marroni |
| Mohammad, Haruna |
| Mohammad, Jihad |
| Mohsin, Asad |
| Morosan, Cristian |
| Mota Veiga, Pedro |
| Mujahid Hilal, Mohamed Ismail |
| Murthy, Rajendran |
| Muskat, Matthias |
| Mustafa, Eshaby |
| Nabil, Mohammad |
| Nagar, Komal |
| Nakhaeinejad, Mahdi |
| Nayak, Naresh |
| Nematpour, Mohammad |
| Nguyen, Hanh |
| Nguyen, Ngan |
| Norris, Cortney |
| Nusair, Khaldoon |
| Nyanjom, Julie |
| O'Leary, Denise |
| O`Mahony, Barry |
| Öğretmenoğlu, Mert |
| Oktadiana, Hera |
| Okumus, Bendegul |
| oliveira, fernanda maria |
| Orlowski, Marissa |
| Otengei, Samson |
| Ozcan, Ceyhun Can |
| Ozdemir, Ozgur |
| Özkoc, Aziz |
| Pai, Chen-Kuo |
| Palic, Irena |
| Palma, Amy |
| Pang, Loretta |
| Parayitam, Satyanarayana |
| Park, Jeong-Yeol |
| Park, Kwangmin |
| Park, Kwangsoo |
| Pasamehmetoglu, Aysin |
| Pattanaik, Debashis |
| Pazhuhan, Mousa |
| Pekerşen, Yeliz |
| Pektaş, Fatih |
| Pereira, Tércio |
| Pereira, Yákara |
| Perrigot, Rozenn |
| Peyrat-Guillard, Dominique |
| Pikkemaat, Birgit |
| Ponting, Sandra Sun-Ah |
| Prebensen, Nina |
| Preko, Alexander |
| Rabiul, Md Karim |
| Ragagnin Pimentel, Maurício |
| Rahaman, Mohammad |
| Rahman, Muhammad Khalilur |
| Raj L, Vimal |
| Ramaano, Azwindini |
| Rashid, Amber |
| Rasoolimanesh, S. Mostafa |
| Rasul, Tareq |
| Rather, Raouf |
| Rebollo, Hazel Princess |
| Rejowski, Mirian |
| Repetti, Toni |
| Reynolds, Dennis |
| Rezapouraghdam , Hamed |
| Ridderstaat, Jorge |
| Rolle, Dr. |
| Romero, Jaime |
| Roy, Hiran |
| Rozkwitalska, Malgorzata |
| Sadeghian Esfahani, Sonia |
| Şahin, Ayşe |
| Sainaghi, Ruggero |
| Sakamoto, Noriaki |
| Salem, Islam |
| Sampaio, Carlos |
| sanga, john |
| Saqib, Natasha |
| Sarfraz, Muddassar |
| Sargsyan, Nikolay |
| Sariisik, Mehmet |
| Saydam, Mehmet |
| Sedmak, Gorazd |
| Şengel, Ümit |
| Şeremet, Mehmet |
| Šerić, Maja |
| Severt, Kimberly |
| Shafei, Reza |
| Sharif, Shahbaz |
| Sharma, Vijay Prakash |
| Shi, Da |
| Shi, Fangfang |
| Shi, Yunxia |
| Shin, YeonHo |
| Shome, Samik |
| Sia, Joseph |
| Sigala, Marianna |
| Silik, Cemal |
| Singh, Amit |
| Singh, Lakhvinder |
| Singh, Ranjit |
| Singh, Shalini |
| Singh, Smita |
| Sirsat, Sujata |
| Sisson, Annamarie |
| Slabbert, Elmarie |
| Smith, Scott |
| Soifer, Inna |
| Song, Baoyi |
| Soonsan, Nimit |
| Sorrentino, Annarita |
| Sousa, Bruno |
| Spiess, Teresa |
| Stokes, Peter |
| Strickland, Paul |
| Stylos, Nikolaos |
| Sufi, Tahir |
| Sun, Bongran Lucia |
| Taheri, Babak |
| Tajeddini, Kayhan |
| Tanrısever, Canan |
| Taskin, Cagatan |
| Teixeira, Sergio |
| Teixeira, Sérgio |
| Templeton, AJ |
| Tepeci, Mustafa |
| Thai Phong, Le |
| Thal, Karen |
| Thang, Phan Vo Minh |
| Thomas-Francois, Kimberly |
| Thomas, K |
| Tiamiyu, Tosin |
| Tikkanen, Irma |
| Tjahjono, Benny |
| Topcuoglu, Esra |
| Torres Tricárico, Luciano |
| Torres, Edwin |
| Tosun, Cevat |
| Traverso, Luciana Davi |
| Tuncdogan, Aybars |
| Tung, Vincent |
| Turktarhan, Gozde |
| Turnsek, Maja |
| Tzeremes, Panayiotis |
| Udunuwara, Maduka |
| Ul Haq, Junaid |
| Ülker, Mustafa |
| Usakli, Ahmet |
| Valeri, Marco |
| Vieira de Souza Meira, Jessica |
| Viñan, Marlon |
| Vo-Thanh, Tan |
| Vogler, Ralf |
| Wang, Chih-Hung |
| Wang, Dan |
| Wang, Shan |
| Wang, Xi |
| Wang, Yao-Chin |
| Wang, Yi-Chieh |
| Wanke, Peter |
| Wei, Wei |
| Weinland, Jeffrey |
| Weinstein, Art |
| Were O, Simon |
| Whalen, Elizabeth |
| Wong, Antony King Fung |
| Wong, Jose WengChou |
| Woyo, Erisher |
| Wu, Hung-Che |
| Wu, Laurie |
| Xia, Menglong |
| Xu, Shi |
| Xue, Jin |
| Yagmur, Yenal |
| Yan, Libo |
| Yang, Yang |
| Yaris, Ahmet |
| Yeoman, Ian |
| Zairul, Mohd |
| Zelenka, Josef |
| Zengin, Burhanettin |
| Zhang, Lu |
| Zhang, Yang |
| Zhang, Ye |
| Zhao, Xiaofeng |
| Zhou, Xiaoge |