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 31 papers were published in the journal, with a median time to first decision of 25 days and a median time from submission to publication of 53 days. The editors would like to express their sincere gratitude to the following reviewers for their generous contribution in 2019:
| Adams, James | Poulakis, Nick |
| Ali, Raian | Reimann, Regina R. |
| Alqahtani, Sarra | Ryabov, Igor |
| Álvarez, David García | Sakari Katko, Tapio |
| Ancuceanu, Robert Viorel | Salliou, Nicolas |
| Angelis-Dimakis, Athanasios | Santulli, Gaetano |
| Aslam, Muhammad | Sarrazin, Natalie |
| Barenji, Ali Vatankhah | Servidio, Rocco |
| Bellamy, Kate | Shrestha, Sadhana |
| Bennett, Mia M. | Sim, Gavin |
| Berri, David | So, Kwok Kan |
| Bewick, Bridgette | Stachl, Clemens |
| Blonski, Slawomir | Giannakas, Filippos |
| Boekema, Egbert | Gilmour, Alan |
| Camphuysen, Kees | Girardi, Alessandro |
| Chen, Lin | Gola, Gianluca |
| Chen, Xin | Greene, Carolyn J. |
| Costa, Nuno Ricardo | Gu, Feng |
| Couto, M Carmen Parafita | Hintermüller, Christoph |
| Dagda, Ruben K. | Hussein, Bassam |
| Dale, Vicki | Imbery, Terence A. |
| Davies, Bethan | Ishihara, Kengo |
| De Coninck, Heleen | Kang, Yeong Seon |
| De Geer, Lars-Erik | Kang, Chen |
| Del Villar, Alberto | Khambu, Bilon |
| Dharmarathne, Suranga | Kim, Yoon-Chul |
| Domizio, Marco Di | Kindu, Mengistie |
| D’Onofrio, Nunzia | Kukreja, Subhash |
| Du, Zhenfang | Laparra-Hernández, Jose |
| Ecker, Saan | Larijani, Hadi |
| Farrugia, Alexander | Lei, Wei |
| Ferras, Carlos | Li, Shuai |
| Freund, Nadja | Magkonis, Georgios |
| Galdi, Chiara | Mahli, Abdo |
| Gdawiec, Krzysztof | Mahmood, Awan |
| Gersak, Gregor | Mao, Xiaobo |
| Marczewski, Wojciech | Sung, Wen-Chieh |
| Mariani, Ilaria | Tama, Bayu Adhi |
| Matos, Cristina | Tan, Le Thanh |
| Matos, Luís Carlos | Thibault, Guillaume |
| McKee, Seth C. | Timofeyev, Ilya |
| Mechkarska, Milena | Toft, Mathias |
| Meltofte, Hans | Tsuchiya, Masahiko |
| Metulini, Rodolfo | Tsukahara, Takahiro |
| Moon, Sanghee | Van Heerden, Peter Vernon |
| Muntendam, Antje | Vázquez-Cano, Esteban |
| Naolou, Toufik | Velasco-Quesada, Guillermo |
| Narayanan, Barath | Vien, Quoc-Tuan |
| Navas-Montilla, Adrian | Volcho, Konstantin |
| Newhall, Katie | Wang, Zhe |
| Ng, Kwan Keung | Warland, Jon S. |
| Nicu, Ionut Cristi | Wentz, Laurel M. |
| Norberg, Anders | Xu, William |
| Nozzoli, Francesco | Yfoulis, Christos |
| Ouyang, Xiaolong | Zhang, Dianbao |
| Pamučar, Dragan | Zhang, Leo |
| Paron, Paolo | Zhang, Ling-juan |
| Parrettini, Sara | Zhang, Jianjia |
| Peng, Chang | Zhao, Juan |
| Pirillo, Angela | Zheng, Wenshu |
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