The editorial team greatly appreciates the reviewers who have dedicated their considerable time and expertise to the journal’s rigorous editorial process over the past 12 months, regardless of whether the papers are finally published or not. In 2019, a total of 95 papers were published in the journal, with a median time to first decision of 19.59 days and a median time from submission to publication of 36 days. The editors would like to express their sincere gratitude to the following reviewers for their generous contribution in 2019:
| Agrahari, Vivek | Manfredini, Stefano |
| Ahmed, Zubair | Mangaonkar, Abhishek |
| Ai, Yong | Marino Gammazza, Antonella |
| Al-Hilaly, Youssra | Martinez, Vicente |
| Amaradhi, Radhika | Martínez-Galiano, Juan Miguel |
| Amato, Felice | Mazur-Bialy, Agnieszka Irena |
| Amezcua, Lilyana | McCaughan, Geoffrey William |
| Ammendola, Michele | McCombe, Pamela |
| Ampatzis, Konstantinos | Mei, Yang |
| Andjelkovic, Anuska V. | Mejias Luqu, Raquel |
| Andreotti, Giuseppina | Merigo, Elisabetta |
| Angrand, Pierre-Olivier | Mira, José Joaquín |
| Ansari, Rais | Miron, Richard J. |
| Arciello, Angela | Mizuo, Keisuke |
| Ashaie, Maeirah | Monguió-Tortajada, Marta |
| Avin, Vijay | Munteanu, Florentina-Daniela |
| Bak, Istvan | Murray, Peter E. |
| Balan, SreeKumar | Musgrave, Ian |
| Balcerczyk, Aneta | Neuman, Manuela |
| Baldwin, Albert S. | Niikura, Ryota |
| Banchelli, Martina | Nitulescu, Mihai |
| Banerjee, Aditi | Norihiko, Narita |
| Barba, Clara | Nouri, Aria |
| Beharry, Kay D. | Nowak, Adriana |
| Behrens, Jürgen | Nyati, Kishan Kumar |
| Beis, Dimitris | Ochieng, Josiah |
| Bhandari, Manohar Prasad | Odland, Jon |
| Biagini, Giuseppe | Olszak, Tomasz |
| Botelho, Monica | Omar, Syed Haris |
| Branca, Jacopo Junio Valerio | Ong, Albert C. M. |
| Cabaro, Serena | Osuagwu, Bethel |
| Cakstina, Inese | Pan, Yangang |
| Capasso, Raffaele | Papantonopoulos, George |
| Cattò, Cristina | Park, Jun-Beom |
| Chahin, Salim | Patrucco, Liliana |
| Chalah, Moussa Antoine | Patti, Francesco |
| Chang, Jer-Ming | Pessina, Federico |
| Chang, Tsung-Hsien | Pincus, Seth |
| Chilaka, Cynthia Adaku | Porebski, Grzegorz |
| Chirumbolo, Salvatore | Porzionato, Andrea |
| Choi, Eung Ho | Qie, Yaqing |
| Choukroun, Joseph | Ranzato, Elia |
| Conlon, Michael | Raposo, Maria |
| Dandawate, Prasad | Ravula, Abhigyan |
| Dangol, Manita | Riffelmacher, Thomas |
| Das, Amitava | Rivera, Víctor M. |
| Di Maro, Antimo | Ročka, Saulius |
| Ear, Jason | Romero, Marta R. |
| Exbrayat, Jean-Marie | Rose, Peter |
| Failla, Cristina M. | Royo, Felix |
| Fitzgerald, David | Rudolf, Rebeka |
| Forn, Cristina | Ruiz Téllez, Trinidad |
| Frank, Saša | Sahu, Saura C. |
| Freedman, Mark | Sakamuri, Siva Sankara Vara Prasad |
| Fujihara, Hisako | Salim, Vonny |
| Fuller, Bryan | Santacroce, Luigi |
| Gajęcki, Maciej | Scarpino, Stefania |
| Gantenbein, Benjamin | Schaiquevich, Paula |
| Garanto, Alejandro | Seedorf, Udo |
| García, Tania | Seitz, Helmut K. |
| Garin, Marina I. | Shahi, Shailesh |
| Garofalo, Mariangela | Sharma, Gayatri |
| Garrity, Deborah | Sharma, Shweta |
| Gea Sanchez, Alfredo | Simon, Marie Christine |
| Gentilucci, Luca | Sinha Ray, Shrestha |
| GHILA, Luiza | Sips, Patrick |
| Gilli, Francesca | Skowron, Krzysztof |
| Gohda, Eiichi | Song, Yang-Heon |
| Golubovskaya, Vita | Sorg, Olivier |
| Gris, Denis | Splichal, Igor |
| Grubić Kezele, Tanja | Srivastava, Pranay |
| Gupta, Rajat | Stange, Katja |
| Gupta, Vijayalaxmi | Stepanenko, Aleksei A. |
| Hellinger, Roland | Stratmann, Bernd |
| Helm, Richard | Struzik, Justyna |
| Hilhorst, Marc | Sullivan, Con |
| Hossain, Md Kamal | Sung, Myong-Hee |
| Huang, Chih-Ling | Tadesse, Melkie |
| Ippoliti, Rodolfo | Takano, Katsura |
| Jayaprakash, Priyamvada | Tanner, Julian A. |
| Jazvinšćak Jembrek, Maja | Tartey, Sarang |
| Jaźwińska, Anna | Tomita, Hiroyuki |
| Johnson, Lorraine | Tsushima, Takahiro |
| Jung, Youngmi | Tzeng, Shiang-Jong |
| Kanamori, Takao | Van Der Velde, Enno |
| Kaur, Gurvinder | Varricchio, Ettore |
| Keightley, Cristina | Veltkamp, Christian |
| Koh, Cho Yeow | Verma, Smriti |
| Koide, Tetsuya | Versino, Elisabetta |
| Koller, Gabriele | Vishe, Mahesh |
| Kozłowska, Mariola | Vymetalkova, Veronika |
| Kuryk, Lukasz | Wallace, David R. |
| Kushkevych, Ivan | Waxman, Joshua |
| Kutikhin, Anton G. | Wilhelms, Daniel B. |
| Laakkonen, Johanna P. | Wilkinson, Anne |
| La-Beck, Ninh | Wodrich, Harald |
| Lam, Yuen Ting | Wood, Alasdair |
| Leporatti, Stefano | Xin, Gang |
| Levitsky, Victor G. | Yagmur, Eray |
| Li, Guohui | Ye, Zhennan |
| Loosli, Felix | Yip, Bon Ham |
| Luna, Aurelio | Yuan, Zhihong |
| Ma, Wanshu | Yuann, Jeu-Ming P. |
| Madine, Jillian | Yura, Yoshiaki |
| Majumder, Poulami | Zaprutko, Lucjusz |
| Mandato, Claudia | Zhang, Guanshi |