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:
| Abbasi Dashtaki , Neda |
| Abdekhoda, Mohammadhiwa |
| Abdolvand, Neda |
| Abdullah, Abrizah |
| Abdullah, Noorhidawati |
| Abirami, A.M. |
| Aboelmaged, Mohamed |
| Achsan, Harry |
| Acikgoz, Fulya |
| Aderibigbe, Semiyu |
| Adeyemi, Ismail |
| Adhikari, Kishalay |
| Adigwe, Ifeanyi |
| Adjei, Kwabena |
| Adraoui, Meriem |
| Aduba, Doris |
| Afonso, Ana Paula |
| Agozie, Divine |
| Agrawal, Swati |
| Aharony, Noa |
| Ahmad, Nyarwi |
| Ahmad, Saeed |
| Ahmad, Sartaj |
| Ahmed, Saifuddin |
| Aibar, Eduard |
| Ajiferuke, Isola |
| Akar, Ezgi |
| Akdim, Khaoula |
| Akram, Umair |
| Al-Khatib, Aceil |
| Al-Sabaawi, Mohmed Y. Mohmed |
| Al-Samarraie, Hosam |
| Al-Zaman, Md. Sayeed |
| Alam, Iftikhar |
| Ali, Mahmood |
| Ali, Muhammad Yousuf |
| Ali, Zarqa |
| Aliyu, Farouk |
| Aljukhadar, Muhammad |
| Alkış, Nurcan |
| Almeida, Marcos |
| Alonso-Muñoz, Laura |
| Amaral Neto, Arlindo |
| Amosun, Tunde |
| An, Lu |
| Anaya-Sánchez, Rafael |
| Anbalagan, Bhuvaneswari |
| Anene, Ifeanyi |
| Angelou, Yannis |
| Annamali, Devisakti |
| Annamali, Devisakti |
| Ansari , Nasim |
| Antil, Anjuman |
| Apuke, Oberiri |
| Archontakis, Fragiskos |
| Arendt, Julie |
| Aricat, Rajiv |
| Arora, Nupur |
| Arroyo-Machado, Wenceslao |
| Ashiq, Murtaza |
| Asnafi, Amir Reza |
| Assalil, Aqil |
| Assefa, Shimelis |
| Astatke, Melese |
| Atwan, Jaffar |
| Au, Cheuk Hang |
| Awan, Waqar |
| Ayatollahi, Haleh |
| Azevedo, Marcia |
| Bacca, Jorge |
| Badri, Seyed Ali |
| Bai, Bingfeng |
| Baines, Linda |
| Bankuoru Egala, Sulemana |
| Banshal, Sumit |
| Barker, Jamie |
| Batool, Syeda |
| Belen Saglam, Rahime |
| Ben Aouicha, Mohamed |
| Benabid, Mohamed |
| Benazic, Dragan |
| Bhattacharyya, Jishnu |
| Biswas, Baidyanath |
| Bodhi, Rahul |
| Bonilla-Calero, Ana Isabel |
| Borah, Porismita |
| Bordignon, Frederique |
| Borrego, Ángel |
| Boulianne, Shelley |
| Bounhas, Ibrahim |
| Braimah, Abdul |
| Bravo, Edgardo R. |
| Bu, Yi |
| Burgess, Jacqueline |
| Buzova, Daniela |
| Caballero Mariscal, David |
| Cai, Yang |
| Çakmak, Tolga |
| Camilleri, Mark |
| Casero-Ripolles, Andreu |
| Catalán, Sara |
| Chakraborty, Uttam |
| Chang, Naicheng |
| Chang, Wen-Chun |
| Chantamas, Marissa |
| Charband, Yeganeh |
| Chauhan, Punam |
| Chen, Chunfeng |
| Chen, Peiqin |
| Chen, Shu-Wei |
| Chen, Xieling |
| Chen, Xingyu Ken |
| Chen, Xiujuan |
| Chen, Yi |
| Chiadmi, Dalila |
| Chiu, Chao-Min |
| Chiware, Elisha |
| Cho, Eun-Young |
| Choi, Sujin |
| Choi, Yunseon |
| Chou, Yu-Jen |
| Chua, Alton |
| Clavio, Galen |
| Cloonan, Michele |
| Coelho, Ricardo |
| Cordero-Gutiérrez, Rebeca |
| Cox, Andrew |
| Culloty, Eileen |
| Curley, Clíona |
| Deavours, Danielle |
| Dehdarirad, Tahereh |
| Deja, Marek |
| Deligkiaouri, Anastasia |
| Deng, Jun |
| Deng, Sanhong |
| Deng, Shengli |
| Detlor, Brian |
| Dias, Gonçalo |
| Diaz, Jesus |
| Dillaerts, Hans |
| Dokhani, Firoozeh |
| Domingues, Juliano |
| Doulani, Abbas |
| Dreisiebner, Stefan |
| Durodolu, Oluwole |
| Dutta, Biswanath |
| Dutta, Debasish |
| Ebrahimy, Saeideh |
| Ebrahimzadeh, Sanam |
| Echebarria, Carmen |
| El Bedawy, Randa |
| Eltemasi, Mahshid |
| Erdoğdu, Fatih |
| Farries, Elizabeth |
| Fernandes, Teresa |
| Ferré-Pavia, Carme |
| Ferreira, Caitlin |
| Fourie, Ina |
| Fraser, Nicholas |
| Fu, Shaoxiong |
| Gao, Siyu |
| García-Peňalvo, Francisco |
| García-Tabuyo, Manuela |
| Garg, Muskan |
| Gaur, Diptanshu |
| Gebremeskel, Gebeyehu Belay |
| Geraei, Ehsan |
| Gever, Verlumun Celestine |
| Ghaffari, Kimia |
| Ghorbanzadeh, Davood |
| Ghosh, Samujjwal |
| Goyanes, Manuel |
| Grant, Rebecca |
| Greenberg, Riki |
| Gu, Jiafeng |
| Guan, Lu |
| Gunasekaran, Mangai |
| Guy, Dana |
| Hamidi, Hodjat |
| Hasan, Layla |
| He, Lan |
| Hebrang Grgic, Ivana |
| Hong, Chuang |
| Hong, Seoyeon |
| Hong, Sounman |
| Hou, Zhiping |
| Hrckova, Andrea |
| Hsu, Chiu-Ping |
| Huang , Ying |
| Huang, Lin |
| Hussain, Hadi |
| Ileanu, Bogdan |
| Introne, Josh |
| Iqbal, Sajid |
| Jang, Sou Hyun |
| Jorge, Thais |
| Jung, Kangsoo |
| Justitia, Army |
| Kalogeropoulos, Antonis |
| Kang, Lele |
| Kang, Min |
| Kassen, Maxat |
| Ke, Hao-Ren |
| KE, Xiaobo |
| Keshavarz, Hamid |
| Khan, Waqas |
| Kim, Amy |
| Kim, Eunyi |
| Kim, Jang Hyun |
| Kim, Jang Hyun |
| Kim, Jeonghyun |
| Kim, Jihoom (Jay) |
| Kim, Yeuseung |
| Kim, Youngseek |
| Kirk, Niamh |
| Komarkova, Jitka |
| Koranteng, Nasir Asiedu |
| Kothari, Ammina |
| Kucukozer-Cavdar, Seyma |
| Kulakli, Atik |
| Kumar, Ravinder |
| Kundu, Srijani |
| Kusumasari, Bevaola |
| Lafia, Sara |
| Laor, Tal |
| Lebanova, Hristina |
| Lee, Chei Sian |
| Lee, Crystal |
| Lee, Crystal T. |
| Lee, Hyegyu |
| Lesani, Zahra |
| Li, Jiaxing |
| Li, Lei |
| Li, Wanqi |
| Li, Xuanxi |
| Li, Xueyan |
| Liang, Liang |
| Liao, Shu-sien |
| Lin, Chin-Feng |
| Lin, Michael Yu-Ching |
| Lin, Yu-Hsun |
| LIU, Ying-Hsang |
| Lněnička, Martin |
| Lopes, Ana Isabel |
| Loureiro, Sandra |
| Luo, Chen |
| MA, Xiaoyue |
| Malik, Amara |
| Manco, Alejandra |
| Mao, Bingjing |
| Maslen, Sarah |
| mazumdar, Suvodeep |
| McLoughlin, Shane |
| Merry, Melissa |
| Micalizzi , Alessandra |
| Mican, Daniel |
| Milosevic, Isidora |
| Ming, T |
| Ming, Yue |
| Mnzava, Ester |
| Mohd Zain, Zawiyah |
| Moro, Robert |
| Murphy, Padraig |
| N, Saikiran |
| Naqvi, Mishal Hasnain |
| Näsi, Matti |
| Nikiforova, Anastasija |
| Nurul Alam, Dr MD |
| Ogul, Hasan |
| Oguz, Fatih |
| Oliver, Gillian |
| Ong, Fon Sim |
| Opoku, Robert |
| Pan, Ling-Yen |
| Pandey, Shri Ram |
| Pandita, Ramesh |
| Pang, Hua |
| Papachristopoulos, Leonidas |
| Papadopoulou, Lambrini |
| Patil, Daivata |
| Paule-Ruiz, MPuerto |
| Perumal, Ganesan |
| Pinglu, Chen |
| R.V., Shabbirhusain |
| Rafi, Muhammad Masood |
| Rasuli, Behrooz |
| Repiso, Rafael |
| Richardson, Joanna |
| Romero, Jaime |
| Roy, Pradeep |
| Santos, Marcelo |
| Santoso, Anang Dwi |
| Saura, Jose Ramon |
| Schmidt, Gisela |
| Sèdes, Florence |
| Segado, Francisco |
| Serrano Santoyo, Arturo |
| Shankar, Kalpana |
| Sharma, Bibhya |
| Sharma, Sujeet |
| Shehata, Ahmed |
| Shen, Yan |
| Shin, Dong-Hee |
| Siapera, Eugenia |
| Singh, Prerna |
| Singh, Simarjeet |
| Sitar-Taut, Dan-Andrei |
| Sözen Şahne, Bilge |
| Sposato, Martin |
| Su, Yan |
| Tang, Muh-Chyun |
| Terras, Melissa |
| Tripathi, Rakhi |
| Tsai, Hsin-yi |
| Ullah, Ahsan |
| Utulu, Samuel |
| Utz, Sonja |
| Viejo, Paloma |
| Vílchez-Román, Carlos |
| Vliegenthart, Rens |
| Wang, Chian |
| Wang, Meng-Meng |
| Wang, zhigang |
| Weinert, Christoph |
| Wheeler, Jonathan |
| Williams, Rachel |
| Wu, Dan |
| Yagunova, Elena |
| Yavetz, Gal |
| Yerbury, Hilary |
| Yeung, Alice |
| Yin, J. |
| Yoon, Ayoung |
| Yoon, JungWon |
| Yu, Wenting |
| Zeng, Jing |
| Zhang, Li |
| Zhang, Xing |
| Zhang, Yifan |
| Zhao, Yu |
| Zhou, Hongyu |
| Zhu, Yupeng |