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:
| Ashraf Abdelbadie, Roba |
| Ab-Rahim, Rossazana |
| Abas, Ismail |
| Abd Elghaffar, Emad |
| Abdelbadie, Rasha |
| Abdelbadie, Rasha |
| AbdelFattah, Tarek Mohamed Hassan |
| Abdelhamid, Ahmed |
| Abdi, Henda |
| Abdollahi, Ahmad |
| Abdoush, Tony |
| Abdul Halim, Zairihan |
| Abdul Wahab, Nor Shaipah |
| Abdullah, Mazni |
| Abdullah, Zaimah |
| Abdullatif, Modar |
| Abdurafiu Noah, Abdurafiu Noah |
| abid, ammar |
| Abidin, Sazali |
| Abu Afifa, Malik |
| AbuRaya, Rania |
| Adel, Nour |
| Adhariani, Desi |
| Agbodjo, Serge |
| Aggarwal, Dr. Kirti |
| Ahammed, Arif |
| Ahemd, Essia Ries |
| Ahmad Khair, Amal |
| Ahmad-Zaluki, Nurwati A. |
| Ahmed, Ahmed Hassan |
| Ahmed, Alim Al Ayub |
| Ahmed, Eman |
| Ahmed, Ibrahim |
| Akwaa-Sekyi, Ellis Kofi |
| Al Amosh, Hamzeh |
| Al Lawati, Hidaya |
| Al Omoush, Khaled |
| Al-Faryan, Mamdouh Abdulaziz Saleh |
| Al-Hamadeen, Radhi |
| Al-Hattami, Hamood Mohd. |
| Al-Najjar, Basil |
| Al-Okaily, Manaf |
| AL-Qatamin, Khaled |
| Al-Shaer, Habiba |
| Al-Shattarat, Basiem |
| AlAdwey, Laila |
| Alarussi, Ali |
| Alazzani, Abdulsamad |
| Albarrak , Mohammed |
| Albarrak, Mohammed |
| albitar, khaldoon |
| Ali, Norli |
| Aljamal, Doaa |
| Aljughaiman, Abdullah A |
| Alkebsee, Radwan Hussien |
| Alkhawaja, Abdallah |
| Alkhazali, Osamah |
| Alkurdi, Amneh |
| Alleyne, Philmore |
| Alqatan, Ahmad |
| Alrowais, Sattam |
| Alsaifi, Khaled |
| Alsharairi, Malek |
| Alshurafat, Hashem |
| Aly, Doaa |
| Amin, Hala |
| Arafat, Imam |
| Arianpoor, Arash |
| Arthur, Neal |
| Ashfaq, Khurram |
| Askary , Saeed |
| Aslanertik, Esra |
| Assidi, Soufiene |
| Awadallah, Emad |
| Aziz, Saqib |
| Baatwah, Saeed |
| Bacha, Sami |
| Bairagi, Ranajit |
| Bajaher, Mohammed |
| Balios, Dimitris |
| Bananuka, Juma |
| Bansal, Manish |
| Bansal, Rohit |
| Ben Khediri, Karim |
| Ben Maatoug, Abderrazak |
| Bimo, Irenius |
| Bochert, Saskia |
| Boshnak, Helmi |
| Böttcher, Katarina |
| Boubaker, Sabri |
| Boujelbene Ben Hamad, Saoussen |
| Brahmana, Rayenda Khresna |
| Bshayreh, Mohamed |
| Bwanya, Princess |
| Byung-Hee Lee, Bryan |
| Bzeouich, Bilel |
| Carmo, Cecília |
| Chakraborty, Bijitaswa |
| Chakroun, Raida |
| Chandren, Sitraselvi |
| Chen, Xihui |
| Chouaibi, Jamel |
| Chouaibi, Salim |
| Coffie, William |
| Conway, Elaine |
| Dakhlaoui, Mejda |
| Dalwai, Tamanna |
| Danson Kimani, Danson Kimani |
| Dawd, Issa |
| DeMello, Jim |
| Demiraj, Rezart |
| Derouiche, Imen |
| Diener, Florian |
| Egbe, Lucia |
| El Ammari, Anis |
| El Khoury, Rim |
| El-Dyasty, Mohamed |
| El-Refae, Ghaleb |
| Elamer, Ahmed |
| Elazab, Reda |
| Elbardan, Hany |
| Elberry, Noha |
| Ellili, Nejla |
| Elmaghrabi, Mohamed |
| Elmagrhi, Mohamed |
| Elmarzouky, Mahmoud |
| Elsayed, Mohamed |
| Elsayed, Mohamed |
| Embong, Zaini |
| Ezeani, Ernest |
| Farhan, Ayda |
| Ficco, Cecilia |
| Freihat, Abdel Razaq |
| Frikha, Azza |
| Ftiti, Zied |
| Gad, Samar |
| Gay, Hui Ting Evelyn |
| Gerged, Ali |
| Ghafoor, Abdul |
| Gull, Ammar Ali |
| Haboub, Ahmad |
| Haj-Salem, Issal |
| Halioui, Khamoussi |
| Hamza, Mouna |
| Haruna, Issahaku |
| Hassan Makhlouf, Mohammed |
| Hassanein, Ahmed |
| Hazgui, Mouna |
| Hegazy, Mohamed |
| Hemrit, Wael |
| Hewa Wellalage, Nirosha |
| Hlel, Khawla |
| Hsu, Kathy Hsiao Yu |
| Hsu, Yu-Lin |
| Huang, Xing |
| Hunjra, Ahmed Imran |
| Ibrahim, Masud |
| Ibrahim, Salma |
| Injeni, Geoffrey |
| Jabari, Huthayfa |
| Jamaani, Fouad |
| Jamel, Lamia |
| Jarboui, Anis |
| Javed, Fahim |
| Juliarto, Agung |
| Kahloul, Ines |
| Kalash, Ismail |
| Kallias, Antonios |
| Kallias, Konstantinos |
| Kamarudin, Fakarudin |
| Kamarudin, Khairul Anuar |
| Karim, Enayet |
| Karim, Sitara |
| Kassem, Rasha |
| Kaur, Jaskaran |
| Khalifa, Maha |
| Khalifa, Mariem |
| Khan, Haroon Ur Rashid |
| Khatib, Saleh F. A. |
| Khelil, Imen |
| khlif, hichem |
| Kolawole, Peace |
| Kumar, Naveen |
| Kumari, Ranjita |
| Latif, Bilal |
| Lee, Sungsil |
| Lee, Woo-Jong |
| Liu, Hanni |
| Louhichi, Wael |
| Luong, Hoa |
| Lysak, Amy |
| Maher, Jeriji |
| Makhaiel , Nargis |
| Mansali, Hatem |
| Mansour, Karim |
| Mardini, Ghassan H. |
| Marei, Yahya |
| Masmoudi, Sana |
| Masron, Tajul Ariffin |
| Masruki, Rosnia |
| McBride, Karen |
| Mehmood, Dr. Rashid |
| Menassa, Elie |
| Menicucci, Elisa |
| Metwally , Tarek |
| Meucci, Fiorenza |
| Mhana, Bilal |
| Miranda, Maria |
| Mohammed, Nor Farizal |
| Mohd Sanusi, Zuraidah |
| Mohd-Rashid, Rasidah |
| Mohd-Salleh, Norman |
| Mokhtar, Ekramy |
| Mousa, Gehan |
| Muneeza, Aishath |
| Munir, Sahar |
| N, Abhishek |
| Naghshbandi, Nader |
| Nicolò, Giuseppe |
| Nistor, Cristina Silvia |
| Nobanee, Haitham |
| Omar, Belal |
| Ong, Chui Zi |
| Oradi, Javed |
| Othman, Radiah |
| Oware, Kofi |
| Papadopoulou, Sofia |
| Philippou, Christina |
| Pillai, Ajay |
| Pirveli, Erekle |
| Pistoni, Anna |
| Potter, Brad |
| Qaderi, Sumaia Ayesh |
| Qawqzeh, Hamza |
| Queku, Isaac |
| Rahmat, Mohd Mohid |
| Rashed, Jamal |
| Rey, Andrea |
| Rieg, Robert |
| Riguen, Rakia |
| Riley, Mark |
| Rouatbi, Wael |
| Rouhi, Safoura |
| Rounaghi, Mohammad Mahdi |
| Rustiarini, Ni Wayan |
| Saeed, Asif |
| Saeudy, Mohamed |
| Safa, Chemingui |
| Sagitova, Roza |
| Sahari, Salawati |
| Saidani, Raoudha |
| Salehi, Mahdi |
| Salem, Rami |
| Sandri, Serena |
| Sannajust, Aurelie |
| Sarea, Adel |
| Shafie, Rohami |
| Shahadat, Khandakar |
| Shahzad, Faisal |
| Shiwakoti, Radha |
| Siagian, Ferdinand |
| Singh, Shveta |
| Sobhan, Abdus |
| Sorour, M. Karim |
| Sourour, Hazami Ep. Ammar |
| Spanò, Rosanna |
| Sproat, Peter |
| Stefanescu, Cristina Alexandrina |
| Swee Sim, Foong |
| Tadros, Hani |
| Taha, Roshaiza |
| Tahajuddin, Sulaiman |
| Talbi, Dorra |
| Tang, Jenna |
| Tasios, Stergios |
| Tasnia, Mashiyat |
| Tawfik, Omar |
| Thrikawala, Sujani |
| Ullah, Md. Hafij |
| Usman, Muhammad |
| Usman, Muhammad |
| Usman, Muhammad |
| Vadasi, Christina |
| Valentinetti, Diego |
| Varmaz, Armin |
| Vasconcelos Marques, Susana |
| Wang, Yang |
| Wasiuzzaman, Shaista |
| Waweru, Nelson |
| Wellalage, Nirosha Hewa |
| Werbin, Eliana |
| Xiang, David |
| Yasmin, Tahira |
| Yassin, Mohammed |
| Yiannoulis, Yiiannis |
| Yong Ang, Soon |
| Yousef, Ibrahim |
| Zaidan, Hala |
| Zampella, Annamaria |
| Zoubi, Taisier |