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 130 papers were published in the journal, with a median time to first decision of 19.5 days and a median time from submission to publication of 39.5 days. The editors would like to express their sincere gratitude to the following reviewers for their generous contribution in 2019:
| Abbas, Hasan | Li, Song-Sui |
| Accorsi, Gianluca | Li, Zongtao |
| Agarwal, Nisha Rani | Liberal, Iñigo |
| Ahmadivand, Arash | Liboiron-Ladouceur, Odile |
| Ahmed, Zeeshan | Lima, Jose Luiz Sousa |
| Akca, B. Imran | Lin, Gong-Ru |
| Akram, Muhammad Nadeem | Lin, Zin |
| Ala, Guido | Lindquist, Nathan |
| Alberucci, Alessandro | Liopo, Anton |
| Aldaya, Ivan | Liu, Songtao |
| Al-Hosiny, Najm M. | Liu, Zhengjun |
| Alloatti, Luca | Love, Gordon |
| Almeida, Jose | Lu, Chia-Feng |
| Álvarez-Tamayo, Ricardo I. | Lu, Huadong |
| Ambs, Pierre | Lu, Liangjun |
| Amitonova, Liubov | Lüdge, Kathy |
| Ananias, Duarte | Lühmann, Alexander Von |
| Anashkina, Elena | Luo, Yanhua |
| Antipov, Oleg L. | Madani, Abbas |
| Arnolds, Heike | Majaron, Boris |
| Ashwyn, Srinivasan | Makaryan, Taron |
| Assanto, Gaetano | Malallah, Ra'ed |
| Avram, Marioara | Malka, Dror |
| Babicheva, Viktoriia | Marino, Francesco |
| Baghdasaryan, Tigran | Markos, Christos |
| Bakunov, Michael | Marpaung, David |
| Bamiedakis, Nikos | Marta, Ruiz Llata |
| Ban, Dayan Ban | Masoller, Cristina |
| Bangalore Rajeeva, Bharath | Masselink, William Ted |
| Bardella, Paolo | Masunov, Artem |
| Barettin, Daniele | Matsuo, Shinji |
| Barille, Regis | Meglinski, Igor |
| Barrera Ramirez, John Fredy | Memmolo, Vittorio |
| Barros, Michael Taynnan | Meng, Xiang |
| Batmunkh, Munkhbayar | Mikhaylovskiy, Rostislav |
| Baumer, Stefan | Mikulchyk, Tatsiana |
| Bazin, Alexandre | Mock, Adam |
| Belardini, Alessandro | Mokarian, Parvaneh |
| Belkin, Mikhail A. | Monteiro, Catarina Silva |
| Belousov, Yu. M. | Monti, Alessio |
| Berezin, Mikhail Y. | Moon, Doo Kyung |
| Biccari, Francesco | Moon, Kiwon |
| Birowosuto, Muhammad Danang | Morosi, Jacopo |
| Bogris, Adonis | Mu, QX |
| Bradley, Arthur | Mullen, Linda |
| Bradshaw, David | Müller, Notger |
| Bruce, Neil C. | Munera, Natalia |
| Bukin, Oleg | Murray, Joe |
| Bunge, Christian-Alexander | Nagao, Tadaaki |
| Butusov, Denis | Nagy, Szilvia |
| Carletti, Luca | Najdahmadi, Avid |
| Carlos, Juan Martína | Nalbach, Peter |
| Carniato, Fabio | Nambu, Isao |
| Castro Do Amaral, Gustavo | Nattestad, Andrew |
| Chacko, Jenu Varghese | Nemes, Norbert M. |
| Chaisakul, Papichaya | Nielsen, Michael |
| Chan, Sze Chun | Nikdast, Mahdi |
| Chang, Hsuan-Ting | Nowicki, Michał |
| Chang, Liann-Be | O’Faolain, Liam |
| Chatterley, Adam S | Odinokov, Sergey |
| Chen, Cheng-Huan | O'Duill, Sean |
| Chen, Liang | Oh, Nuri |
| Chen, Long | Orihuela-Espina, Felipe |
| Chen, Lung-Chien | Ortolani, Michele |
| Cheng, Pei | Osório, Jonas H |
| Chiang, Naihao | O'Sullivan, Thomas |
| Chipouline, Arkadi | Osvet, Andres |
| Chow, Chi-Wai | Pachnicke, Stephan |
| Chui, Hsiang-Chen | Pang, Xiaodan |
| Ciminelli, Caterina | Paolucci, Francesco |
| Ciracì, Cristian | Papasimakis, Nikitas |
| Collar, César Villa | Paredes, Angel |
| Conforti, Evandro | Partanen, Mikko |
| Cong, Longqing | Pawłowski, Eligiusz |
| Cornaro, Cristina | Peer, Akshit |
| Costa, Manuel Filipe P.C.M. | Perez, Rafael |
| Cronin-Golomb, Mark | Pérez-Merino, Pablo |
| Cruz, Maria-Luisa | Perrrin, Stephane |
| Dai, Nengli | Perry, Philip |
| Daria, Vincent | Peterson, Andrew F |
| Datta, Rupsa | Piao, Xianji |
| Davoodzadeh, Nami | Piccinelli, Fabio |
| Del Villar, Ignacio | Pierscinska, Dorota |
| Delgado, Juan Luis | Pilori, Dario |
| Demoli, Nazif | Poisel, Hans |
| Devadas, Mary Sajini | Politano, Antonio |
| Do, Tronghop | Porte, Xavier |
| Domínguez, Jorge Luis | Prochowicz, Daniel |
| Dong, Mark | Proietti Zaccaria, Remo |
| Doronin, Alexander | Pryamikov, Andrey |
| Dorrío, Benito V. | Pu, Mingbo |
| Doulos, Lambros T. | Rajbhandari, Sujan |
| Drouard, Emmanuel | Ramaccia, Davide |
| Dubey, Richa | Ramanavicius, Arunas |
| Duma, Virgil-Florin | Ramos Cabrer, Pedro |
| Durmaz, Habibe | Ranjkesh, Amid |
| E., Yiwen | Rasskazov, Ilia |
| Ebisawa, Satoshi | Ricciardi, Armando |
| Eggebrecht, Adam T. | Riesch, Michael |
| Ekins-Daukes, Ned | Rizal, Conrad |
| Elafandy, Rami | Rodríguez-Lara, Blas Manuel |
| Elbouz, Marwa | Röhm, André |
| Ennser, Karin | Rojas-Laguna, Roberto |
| Eppig, Timo | Romano, Valerio |
| Esfahani Monfared, Yashar | Rotenberg, Nir |
| Esposito, Flavio | Ruan, Haowen |
| Esposito, Marco | Rufo, Julio |
| Fan, Wenhui | Rybin, Mikhail V. |
| Fan, Yuancheng | Saijo, Yoshifumi |
| Farzam, Parisa | Saito, Shinichi |
| Feichtner, Thorsten | Sakata, Shuzo |
| Fournier, Georges | Salceda-Delgado, Guillermo |
| Franco, Sandra | Sánchez-Soto, Luis L. |
| Freitas, Anderson Zanardi | Sandanayaka, Atula S. D. |
| Garbovskiy, Yuriy | Sang, Tzu-Hsien |
| García-López, J.H. | Sano, Eiichi |
| García-Rupérez, Jaime | Santana, Ted |
| Garmire, Elsa | Sarenac, Dusan |
| Gateau, Thibault | Sarma, Raktim |
| Gatesman, Andrew J. | Scalari, Giacomo |
| Gaudino, Roberto | Schatz, Richard |
| Ge, Jia | Schepler, Kenneth |
| Geiser, Martial H. | Schmuttenmaer, Charles |
| Geiser, Peter | Schneider, Thomas |
| Georghiades, Costas N. | Scholkmann, Felix |
| Ghenuche, Petru | Schudlo, Larissa |
| Ghione, Giovanni | Schützhold, Ralf |
| Gholipour, Behrad | Sebők, Dániel |
| Gili, Valerio Flavio | Secondini, Marco |
| Gonçalves, Alexandre | Semanova, Yulia |
| Gorodetsky, Andrei | Seok, Tae Joon |
| Gorodkiewicz, Ewa | Serafino, Giovanni |
| Goulding, David | Shalaginov, Mikhail Y. |
| Gozzard, David | Shin, Jong-Dug |
| Graham, Matt W. | Shoydin, Sergey |
| Grunwald, Ruediger | Sigg, Hans-Christian |
| Habib, Md Selim | Simonot, Lionel |
| Haffner, Christian | Simunovic, Katica |
| Hallak Elwan, Hamza | Singh, Jai Prakash |
| Hamza, Abdelbaset | Sivasubramanian, Kathyayini |
| Hamza, Ben | Slivken, Steven |
| Han, Xiuyou | Smetanin, Sergei N. |
| Harada, Yukihiro | Song, Chaolong |
| Hartnagel, Hans | Sorokina, Mariia |
| Hassan, Karim | Statkiewicz-Barabach, Gabriela |
| Haupt, Karsten | Stepniak, Grzegorz |
| Heck, Martijn J. R. | Stroppa, Alessandro |
| Hegmann, Frank | Stubbs, Christopher |
| Hjelme, Dag Roar | Sujecki, Slawomir |
| Hong, Yanhua | Sun, Bing |
| Horvath, Tomas | Sun, Kien-Wen |
| Hsu, Jin-Cherng | Sun, Yun-Lu |
| Hung, Yu-Han | Tabaran, Flaviu |
| Huttunen, Mikko J. | Taflove, Allen |
| Hwang, Sheng-Kwang | Tahara, Hironobu |
| Ikeda, Akihiko | Taylor, Cian |
| Iwamoto, Satoshi | Tian, Fenghua |
| Jaimes Reategui, Rider | Tornari, Vivi |
| Jalali, Bahram | Toronov, Vladislav |
| Jandieri, Vakhtang | Torres, Sergio |
| Jiang, Xuefeng | Torres-Gomez, Ismael |
| Jin, Xiaomin | Totero Gongora, Juan Sebastian |
| Joo, Ki-Nam | Tseng, Shuo-Yen |
| Kaczmarek, Małgorzata T. | Tserkezis, Christos |
| Kaplan, Andrey | Tsuji, Yasuhide |
| Kazanskiy, Nikolay | Udalcovs, Aleksejs |
| Keiser, George | Ueno, Kosei |
| Khabibullin, Rustam | Valle, Ángel |
| Khadka, Dhruba B. | Valter-Kocsi, Krysztina |
| Khalid, Ata | Van Putten, Michel J.A.M. |
| Khan, Mohammad A. | Vardasca, Ricardo |
| KILIÇ, Kıvılcım | Vasiliev, Sergei A. |
| Kim, Jang Ah | Velha, Philippe |
| Kim, Jong Hyun | Vicente, Carlos Miguel Santos |
| Kirk, Andrew | Vilardy O., Juan M. |
| Kobtsev, Sergey | Vishwanath, Karthik |
| Koike, Takahiko | Vohra, Varun |
| Koike-Akino, Toshiaki | Wang, Fa-Qiang |
| Kominis, Yannis | Wang, Muguang |
| Konstantaki, Maria | Wang, Shang |
| Kordov, Krasimir | Wang, Xu |
| Kosma, Kyriaki | Wei, Chengli |
| Kovalev, Anton | Weis, Martin |
| Kovalsky, Marcelo G. | Wen, Jianming |
| Krasnok, Alex | Wenzel, Hans |
| Krauss, Thomas | Wienold, Martin |
| Kumar, Naresh | Wu, Chyan-Chyi |
| Kumar, Shailabh | Wyant, James C. |
| Kwak, Chong Hoon | Ye, Zhi-Ting |
| Kwon, Soon-Hong | Yeh, Chien-Hung |
| Lappalainen, Kari | Yokota, Nobuhide |
| Lavacca, Francesco G. | You, Young-Hwan |
| Law, Stephanie | Zabini, Flavio |
| Leach, Richard | Zeng, Shuwen |
| Leal-Junior, Arnaldo | Zhan, Qiwen |
| Lee, Hyeonseok | Zhang, Yunyan |
| Lee, Ray-Kuang | Zhou, Chao |
| Leuermann, Jonas | Zografopoulos, Dimitrios C. |
| Li, Kang |
© 2020 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).