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:
| Abd Rahman, Nur Hidayah |
| Abrate, Graziano |
| Abu Kassim, Zorah |
| Ackerman, David |
| Adie, Bailey |
| Agnihotri, Durgesh |
| Ahmad, Rozila |
| Ainin, Sulaiman |
| Airey, David |
| Ali, Alisha |
| Ali, Faizan |
| Almeida, Sofia |
| Almuhrzi, Hamed |
| Alrawadieh, Zaid |
| Aluri, Ajay |
| Alvarez, Maria |
| Amin, Sakib Bin |
| Andreu, Luisa |
| Aquino, Jessica |
| Aruan, Daniel |
| Atef, Tamer |
| Atkinson, Peter |
| Backer, Elisa |
| Bakas, Fiona |
| Baniya, Rojan |
| Bausch, Thomas |
| Bazylewich, Martin |
| Birenboim, Amit |
| Blackwood, Robert |
| Blanařová, Astrida |
| Borchegrvink, Carl |
| Brida, Juan Gabriel |
| Burkov, Ivan |
| Bux, Christian |
| Buzova, Daniela |
| Capistrano, Robert Charles |
| Carlisle, Sheena |
| Carr, Neil |
| Carvache-Franco, Wilmer |
| Cassia, Fabio |
| Chan, Eric |
| Chao, Jen-Chih |
| Chatibura, Delly M. |
| Chen, Brendan |
| Chen, Li-Hsin |
| Chen, Shengrong |
| Chhabra, Deepak |
| Chin, Chee Hua |
| Chittiprolu, Vinay |
| Chiu, Weisheng |
| Claudia Gil, Arroyo |
| Cooper, Christofer |
| Coronel, Monica |
| Correia, Antónia |
| Corsun, David |
| Croy, Glen |
| Cuccia, Tiziana |
| D'Acunto, David |
| De-Miguel-Molina, María |
| Del Chiappa, Giacomo |
| Díaz-Pichardo, Rene |
| Dixit, Saurabh |
| Droli, Maurizio |
| Dube, Kaitano |
| Dubler, Leslie |
| Elgammal, Islam |
| Erbaş, Emre |
| Ernawati, Ni Made |
| Falk, Martin Thomas |
| Fallon, Julia |
| Ferreira , Sanette |
| Ferrer-Rosell, Berta |
| Filep, Sebastian |
| Filieri, Raffaele |
| Filimonau, Viachaslau |
| Fotiadis, Anestis |
| Fuchs, Matthias |
| Fusté-Forné, Francesc |
| Galvagno, Marco |
| Gardiner, Sarah |
| Garg, Anshul |
| Gnoth, Juergen |
| Gomez-Casero, Gema |
| Gretzel, Ulrike |
| Gupta, Vikas |
| Gyódi, Kristóf |
| Halim, Hengky |
| Hermann, Uwe |
| Hosany, Sameer |
| Hsu, Chia-Shiang |
| Hsu, Fu-Sung |
| Hsu, FuChieh |
| Hsu, Li-Chun |
| Huang, Sabrina |
| Irimiás, Anna |
| Islam, Talat |
| Janchai, Napaporn |
| Jimura, Takamitsu |
| Jolliffe, Lee |
| Ju, Boreum |
| Kaaristo, Maarja |
| Kah, Junghye A. |
| Kasavan, Saraswathy |
| Kastenholz, Elisabeth |
| Khodadadi, Masood |
| Kiatkawsin, Kiattipoom |
| Kock, Florian |
| Koseoglu, Mehmet Ali |
| Kozak, Metin |
| Kruger, Martinette |
| Lai, Ivan |
| Lasso, Aldi |
| Laws, Eric |
| Lenggogeni , Sari |
| Leong, Quee-Ling |
| Lepkowska-White, Elzbieta |
| Li, Jing |
| Lima, Joana |
| Litvin, Stephen |
| Loverio, Jennifer |
| Lugosi, Peter |
| Ma, Jianyu |
| Marine-Roig, Estela |
| Marques, Jorge |
| Marsden, Stevie |
| Martin, Drew |
| Matzler, Kurt |
| Mauri, Maurizio |
| Menicacci, Luca |
| Mhlanga, Oswald |
| Michael, Noela |
| Mihalic, Tanja |
| Milman, Ady |
| Mladenovic, Dusan |
| Mondal, Sanjana |
| Mondo, Tiago |
| Morales, Diana |
| Morgan, Damian |
| Morrison, Alastair |
| Moyle, Brent |
| Neuhofer , Barbara |
| Özgen, Leyla |
| Pasca, Maria Giovina |
| Peters, Mike |
| Pinto, Patrícia |
| Pratt, Stephen |
| Provenzano, Davide |
| Pudaruth, Santosh |
| Qiu, Mengyuan |
| Quinteiro, Sílvia |
| Quoquab, Farzana |
| Rakić, Tijana |
| Rather, Raouf |
| Rauf, Abdul |
| Ravichandran, Swathi |
| Reid, Neil |
| Rodrigo, Dr Padmali |
| Rodrigues, Aurea |
| Rossetti, Giulia |
| Rovelli, Paola |
| Ruggieri, Giovanni |
| Saayman, Andrea |
| Salur, Mehmet Umut |
| Samaddar, Kaushik |
| Samoggia, Antonella |
| Santos, Vasco |
| Scott, Noel |
| Scuderi, Raffaele |
| Seetaram, Neelu |
| Seyitoğlu, Faruk |
| Shah, Chetan |
| Sharpley, Richard |
| Sia, Joseph |
| Siakwah, Pius |
| Sihombing, Irene |
| Silva, Sílvia |
| Skavronskaya, Liubov |
| Slivar, Iva |
| Sobihah, Mutia |
| Sthapit , Erose |
| Sud-On, Ploy |
| Tham, Aaron |
| Timmermans, Harry |
| Ting, Hiram |
| Tubillejas-Andrés, Berta |
| Utomo, Sulistyo |
| Vada, Sera |
| Van Huy, Nguyen |
| Van Raaij, Fred |
| Vidon, Elizabeth |
| Viglia, Giampaolo |
| Villier, Loïc |
| Wan, Bruce |
| Wan, Yim King Penny |
| Wang, Mei-jung |
| Wegerer, Philipp |
| Wen, Jun |
| Wong, Jose Weng Chou |
| Wong, Lim Jin |
| Yeap, Jasmine |
| Yu, Joanne |
| Yuan, Jingxue (Jessica) |
| Yuen, Tsunwai Wesley |
| Zentveld, Elisa |
| Zirbes, Emily |