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:
| Abdali, Roghayeh |
| Abdel Aziz, Rasha |
| Abdelmotaleb, Moustafa |
| Abdillah, Muhammad Rasyid |
| Abdul Manaf, Halimah |
| Abualqumboz, Moheeb |
| Acharya, Abhilash |
| Adhikari, Dev Raj |
| Afshan, Gul |
| Afum, Ebenezer |
| Aggarwal, Vijita |
| Agyabeng-Mensah, Yaw |
| Ahmad, Muhammad |
| Ahmad, Nyarwi |
| Akram, Zubair |
| Al shehhi, Abdulmunem |
| Al-Aama, Arwa |
| Al-adaileh, Raid |
| Al-Busaidi, Kamla |
| Alam, Ashraful |
| Alam, Mirza Mohammad Didarul |
| Albors-Garrigos, Jose |
| Albuloushi, Nour |
| Aldieri, Luigi |
| Alegre, Joaquin |
| Alexandru, Vlad-Andrei |
| Almahendra, Rangga |
| Alo, Obinna |
| Alshahrani, Dr Hussain Saad |
| Alves Teixeira, Adriano |
| Alves, Rafael |
| Alwert, Kay |
| Amalia, Mirta |
| Anand, Amitabh |
| Andreeva, Tatiana |
| Andrei, Andreia |
| Annosi, Maria Carmela |
| Antonova, Albena |
| Anyacho, Benjamin |
| Aouina, Chiraz |
| Appel-Meulenbroek, Rianne |
| Arain, Ghulam Ali |
| Aramburu Goya, Nekane |
| Ardito, Lorenzo |
| Arias-Pérez, José |
| Arslan, Ahmad |
| Arslan, Ahmad |
| Artusi, Federico |
| Arun, Korhan |
| Ashok, Mona |
| Aslam, Muhammad |
| Athota, Vidya Sagar |
| Atiqul Haq, Shah Md. |
| Attia, Ahmed |
| Aurelio Abreu Cardozo, Erico |
| Awan, Usama |
| Azeem, Sundas |
| Azeez, Neetha |
| Azrin, Wahab |
| Baima, Gabrielle |
| Baker, Ali |
| Balle, Andrea |
| Ballestra, Luca Vincenzo |
| Bamel, Umesh |
| Bangotra, Parveen |
| Bansal, Pratosh |
| Barbin Laurindo, Fernando Jose |
| Barbosa, Ricardo |
| Baroni, Rodrigo |
| Bartoloni, Sara |
| Baruk, Agnieszka |
| Basu, Shubhabrata |
| Batistic, Sasa |
| Batistic, Sasa |
| Battisti, Enrico |
| Baudier, Patricia |
| Bavik, Yuen Lam |
| Bedford, Denise Ann Dowding |
| Behl, Abhishek |
| Belitski, Maksim |
| Belkhodja, Omar |
| Bellis, Paola |
| Bencsik, Andrea |
| Bennet, Alex |
| Berraies, Sarra |
| Bertello, Alberto |
| Bhattacharjee, Kalyan |
| Bhatti, Sabeen |
| Bhatti, Waheed Akbar |
| Bhatti, Zeeshan |
| Bianchi, Carlos |
| Bishwas, Sumant |
| Blasi, Silvia |
| Bloodgood, James |
| Bo, Damien |
| Boateng, Henry |
| Bodhi, Rahul |
| Bohorquez Lopez, Victor Wilfredo |
| Booker, Lorne |
| Boughanmi, Afef |
| Bouncken, Ricarda |
| Bratianu, Constantin |
| Brazier, Frances |
| Bryant, Scott |
| Budhwar, Pawan |
| Burger-Helmchen, Thierry |
| Busch, Peter |
| Bustinza, Oscar F. |
| Bution, Jefferson |
| Butt, Atif Saleem |
| Cabeza Pulles, Dainelis |
| Cai, Yingdan |
| Caldwell, Nicholas |
| Camargo, Maria Emília |
| Campos-Climent, Vanessa |
| Canestrino, Rossella |
| Cannavacciuolo, Lorella |
| Cao, Dongmei |
| Cappa, Francesco |
| Caputo, Francesco |
| Cardinali, Silvio |
| Casillas, José C. |
| Casprini, Elena |
| Castellano, Sylvaine |
| Castro Goncalves, Luciana |
| Cauwelier, Peter |
| Cavalheiro, Gabriel |
| Cavallo, Angelo |
| Cegarra-Navarro, Juan-Gabriel |
| Centobelli, Piera |
| Cepeda-Cardona, Juan |
| Cepeda-Carrión, Ignacio |
| Cepeda, Gabriel |
| Cerchione, Roberto |
| Chaabani, Yasmine |
| Chahal, Bhupinder |
| Chai, Jian |
| Chan, Christopher |
| Chang, Kuo-Hsiung |
| Charan, Parikshit |
| Charband, Yeganeh |
| Chatterjee, Sheshadri |
| Chaudhuri, Ranjan |
| Chen, Ao |
| Chen, Hongquan |
| Chen, Jianbin |
| Chen, Jie |
| Chen, Kuan-Yang |
| Chen, Xinhui |
| Cheng, Edwin |
| Cheong, Kam Fai |
| Chien, Pei-Yu |
| Chierici, Roberto |
| Chin, Tachia |
| Christofi, Michael |
| Chua, Alton |
| Chua, Alton |
| Ciampi, Francesco |
| Cillo, Valentina |
| Ciriello, Raffaele |
| Conger, Sue |
| Cordeiro, Marcelo |
| Cristofaro, Concetta Lucia |
| Crupi, Antonio |
| Csepregi, Anikó |
| Cui, Yu |
| Cumin, Dana |
| D'Angelo, Viviana |
| Da Silva, Sergio Luis |
| Dabic, Marina |
| Dahiyat, Samer |
| Daim, Tugrul |
| Dal Mas, Francesca |
| Dandan, Sameer |
| Dang, Quyen |
| Daniele, Lucia |
| Davison, Robert |
| De Almeida, Fernando |
| De Francisco, Antonio |
| De Silva, Muthu |
| Debellis, Francesco |
| Degbey, William Y. |
| Del Sarto, Nicola |
| Del Vecchio, Pasquale |
| Denford, James |
| Dhir, Amandeep |
| Di Vaio, Assunta |
| Dierberger, George |
| Dietz, Laura |
| Dimos, Chris |
| Ding, Guanqi |
| Dinibutun, Sait Revda |
| Discua Cruz, Allan |
| Dong, Feng |
| Du, Jingshu |
| Duan, Kaifeng |
| Duan, Sophia |
| Duan, Yunlong |
| Duodu, Bismark |
| Durst, Susanne |
| Elías Hardy, Lidia |
| Ergun, Hande |
| Erickson, G. |
| Fachinelli, Ana |
| Fait, Monica |
| Fang, Bin |
| Farina Briamonte, Massimiliano |
| Fawehinmi, Olawole |
| Feng, Jiaojiao |
| Feng, Xiaobin |
| Fereidoonian, Shirin |
| Fernandes Crespo, Cátia |
| Fernandes, Cristina |
| Ferraris, Alberto |
| Ferreira, João |
| Festa, Giuseppe |
| Fiano, Fabio |
| Filieri, Raffaele |
| Fischer , Bruno |
| Fletcher-Brown, Judith |
| Ford, Dianne |
| Fraccascia, Luca |
| Franco, Stefano |
| Frank, Alejandro |
| Franzò, Simone |
| Freeburg, Darin |
| Fu, Jing |
| Galati, Antonino |
| Galati, Francesco |
| Gangi, Francesco |
| Ganguly, Anirban |
| Garbuio, Massimo |
| García-Almeida, Desiderio |
| Gavrilova, Tatiana |
| Gherardi, Silvia |
| Ghosh, Anindya |
| Gomes, Paulo |
| Gonzalez, Rodrigo |
| Goswami, Anil |
| Graeml, Alexandre Reis |
| Grandinetti, Roberto |
| Grimaldi, Michele |
| Guadamillas, Fátima |
| Gueldenberg, Stefan |
| Guo, Ying |
| Gupta, Sangita |
| Harrison, Frances |
| Harvey, Jean-Francois |
| Hasnain, Sheikh |
| Hassan, Yusuf |
| Hay, David |
| Hernández-Linares, Remedios |
| Hernaus, Tomislav |
| Hong, Yuxiang |
| Hoque, Mohammad |
| Huang, Lei |
| Huo, Chaoguang |
| Imam, Hassan |
| Intezari, Ali |
| Ip Soo Ching, Jean Marie |
| Islam, Dr Mohammad Tarikul |
| Islam, Md |
| Islam, Talat |
| Jabbour, Ana Beatriz Lopes de Sousa |
| Jabeen, Fauzia |
| Jackson, Timothy |
| Jaiswal, Akansha |
| Jensen, Peter Ørberg |
| Jha, Ashish Kumar |
| Jia, Ruiqian |
| Jiang, Rong |
| Jones, Nory |
| Jose, Charbel |
| Jovanovic, Marin |
| Junbang, Lan |
| Kallmuenzer, Andreas |
| Kalthaus, Martin |
| Kalyar, Masood |
| Karabsheh, Radwan |
| Karami, Azhdar |
| Karami, Masoud |
| Khan, Huda |
| Khan, Zaheer |
| Khawaja, Kausar Fiaz |
| Khelladi, Insaf |
| Kim, Andrea |
| Kotlar, Josip |
| Kucharska, Wioleta |
| Kumar, Anil |
| Kumar, Sanjay |
| Laguir, Issam |
| Laihonen, Harri |
| Lakshman, C |
| Le, Phong |
| Leal-Rodriguez, Antonio Luis |
| Lech, Przemysław |
| Lee, Chien Sing |
| Leisyte, Liudvika |
| Leonelli, Simona |
| Leoni, Luna |
| Lerro, Antonio |
| Levallet, Nadège |
| Lhuillery, Stéphane |
| Li, Honglei |
| Li, Jian |
| LI, Jizhen |
| Li, Xiaolin |
| Li, Xiaoyu |
| Li, Yi |
| Liang, cong |
| Lin, Chien-Liang |
| Lin, Yang |
| Little, Todd |
| Lockett, Martin |
| López-Fernández, Concepción |
| Lowe, Kevin |
| Lu, Xinxin |
| Lukosevicius, Alessandro |
| Luqman, Adeel |
| Ma, Jifeng |
| Ma, Zhenzhong |
| Madrid-Guijarro, Antonia |
| Mafrolla, Elisabetta |
| Magistretti, Stefano |
| Magliocca, Pierpaolo |
| Magni, Domitilla |
| Magnier-Watanabe, Remy |
| Malik, Ashish |
| Malik, Nishtha |
| Manoel Queiroz, Maciel |
| Marchisotti, Gustavo |
| Maric, Josip |
| Marinelli, Luca |
| Mariotti, Francesca |
| Martín de Castro, Gregorio |
| Martínez-Caro, Eva |
| Martinez-Costa, Micaela |
| Martínez-Martínez, Aurora |
| Martínez, Ángela |
| MARTINS, ANA |
| Marzi, Giacomo |
| Matricano, Diego |
| Mazzola, Erica |
| Mazzucchelli, Alice |
| Mehreen, Hina |
| Mehrgan, Mansoreh |
| Mehta, A |
| Meisiek, Stefan |
| Meissner, Dirk |
| Meliha, Handzic |
| Men, Chenghao |
| Merindol, Valerie |
| Michailova, Snejina |
| Mogaji, Emmanuel |
| Mohd, Razeef |
| Monavvarifard, Feyzallah |
| Mora, Luca |
| Moser, Roger |
| Mukherjee, Debmalya |
| Mun, Hee Jin |
| Murgia, Gianluca |
| Mussi, Clarissa |
| Natalicchio, Angelo |
| Ng, Peggy |
| Nicotra, Melita |
| Nirino, Niccolo |
| Nobari, Niloofar |
| Nordin, Norani |
| Ojha, Divesh |
| Oliva, Fábio |
| Oluikpe, Paul |
| Ooi, Yat Ming |
| Ordonez de Pablos, Patricia |
| Orhan, Mehmet A. |
| Orlando, Beatrice |
| Pagani, Regina |
| Palladino, Rosa |
| Pandey, Jatin |
| Panniello, Umberto |
| Papa, Armando |
| Papa, Armando |
| Parayitam, Satyanarayana |
| Parmentola, Adele |
| Pascucci, Federica |
| Patel, Parth |
| Paul, Sanjoy |
| Pellegrini, Massimiliano |
| Pellegrino, Roberta |
| Peng, He |
| Perano, Mirko |
| Pereira, Rafael |
| Peruffo, Enzo |
| Peter, Gerhard |
| Pham, Nhat Tan |
| Phinaitrup, Boon-anan |
| Pinelli, Michele |
| Pinho, Isabel |
| Ponsiglione, Cristina |
| Prikshat, Verma |
| Provitera, Michael |
| Purkayastha, Anish |
| Qu, Guannan |
| Qu, Ying |
| Quinto, Ivana |
| Rabetino, Rodrigo |
| Raguseo, Elisabetta |
| Rahman, Md. |
| Rahman, Mizan |
| Ramadani, Veland |
| Rammal, Hussain |
| Rana, Sudhir |
| Randles, Theodore |
| Rashid , AKM Mamum |
| Rashid, Nurulizwa |
| Raswant, Arpit |
| Redondo, María |
| Rialti, Riccardo |
| Richardson, Christopher |
| Riso, Teresa |
| Rondi, Emanuela |
| Roohanifar, Mohammad |
| Rossmann, Alexander |
| Rovelli, Paola |
| Sáenz, Josune |
| Sahibzada, Umar |
| Salo, Jari |
| Samer, Al-shami |
| Samikar, Surendra |
| Sampaio, Carlos |
| Sánchez-Bueno, María José |
| Sanchis-Palacio, Joan Ramon |
| Santoro, Gabriele |
| Santos, Clarice |
| Santos, Fernando |
| Sarpong, David |
| Saxena, Deepak |
| Scerri, Moira |
| Schiavone, Francesco |
| Schniederjans, Dara |
| Scuotto, Veronica |
| Sengupta, Santoshi |
| Sengupta, Tuhin |
| Seol, Hyun Do |
| Serenko, Alexander |
| Shaheen, Khurram |
| Shaheer, Noman Ahmed |
| Shamim, Saqib |
| Shankar, Amit |
| Sharif, Shahbaz |
| Sharma, Piyush |
| Shen, Yung-Chi |
| Shet, Sateesh |
| Sick, Nathalie |
| Siengthai, Sununta |
| Silva de Garcia, Plínio |
| Simeone, Luca |
| Simoni, Michele |
| Singh, Prem Kumar |
| Singh, Sanjay |
| Sohal, Amrik |
| Song, Ma-Lin |
| Song, Yuanyang |
| Soniewicki, Marcin |
| Stadler, Raphaela |
| Stam, Daan |
| Stefano, Elia |
| Sui, Sui |
| Sumbal, Muhammad Saleem |
| Sumbal, Muhammad Saleem Ullah Khan |
| Talwar, Shalini |
| Tan, Lili |
| Teixeira, Eduardo |
| Telavanich, Chatchawal |
| Thammakoranonta, Nithinant |
| Tho, Nguyen |
| Tortora, Debora |
| Trabucchi, Daniel |
| Trevino, Teresa |
| Troise, Ciro |
| Trusson, Clive |
| Tu, Yidong |
| Tuan Nham, Phong |
| Tung, Feng-Cheng |
| Turulja, Lejla |
| Ullrich, André |
| Valentino, Alfredo |
| Van Gils, Suzanne |
| Varma, Arup |
| Vatamanescu, Elena-Madalina |
| Vaz, Daicy |
| Veglio, Valerio |
| Vendrell-Herrero, Ferran |
| Venugopal, Aparna |
| Vicentini, Francesca |
| Visintin, Filippo |
| Voola, Ranjit |
| Wan, Congying |
| Wang, Changfeng |
| Wang, Changyu |
| Wang, Chunhsien |
| Wang, Minhong |
| Wang, Qian |
| Wang, Shanshan |
| Wang, Shouyang |
| Wang, Wei-Tsong |
| Wang, Xiangyang |
| Wang, Xiruo |
| Wang, Youying |
| Wanke, Peter |
| Warrier, Uma |
| Wiley, Jennilyn |
| Willoughby, Kelvin |
| Wray, Siobhan |
| Xia, Glenn |
| Xiao, Hao |
| Xu, Liwei |
| Yadav, Devendra K. |
| Yang, Chen-Wei |
| Yang, Hong |
| Yang, Na |
| Yang, Xiaowei |
| Yildiz, Emre |
| yiyong, Yu |
| Younas, Amjad |
| Yozgat, Ugur |
| Yuliansyah, Yuliansyah |
| Zait, Adriana |
| Zasa, Federico |
| Zehrer, Anita |
| Zelaya, Jader |
| Zhan, Sha-lei |
| Zhang, Jin |
| Zhang, Min |
| Zhang, Na |
| Zhang, Yi |
| Zhao, Shasha |
| Zhao, Xinyuan |
| Zhou, Wei |
| Zhu, Siwei |
| Zieba, Malgorzata |
| Zou, Tracy |
| 安, 小米 |
| 高, 山行 |