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 225 papers were published in the journal, with a median time to first decision of 22 days and a median time from submission to publication of 44 days. The editors would like to express their sincere gratitude to the following reviewers for their generous contribution in 2019:
| Aarts, Gert | Létang, Jean Michel |
| Abraham, Zulema | Li, Liang |
| Adams, Fred | Li, Shirley Weishi |
| Adams, Jenni | Liberali, Valentino |
| Agullo, Ivan | Liberati, Stefano |
| Aichelin, Jörg | Licata, Ignazio |
| Akiyama, Kazunori | Lichtenegger, Herbert |
| Alodjants, Alexander | Lin, Lap Ming |
| Alves Batista, Rafael | Lingam, Manasvi |
| Andrew, Keith | Liss, Tony M. |
| Arbuzov, Andrei | Liu, Fu-Hu |
| Aros, Rodrigo | Liu, Xiang |
| Arzano, Michele | Livine, Etera |
| Asada, Hideki | Logoteta, Domenico |
| Attems, Maximilian | LoSecco, John M. |
| Ayriyan, Alexander | Louko, Jorma |
| Babichev, Eugeny | Ludu, Andrei |
| Bahamonde, Sebastián | Lunin, Oleg |
| Balakin, Alexander B. | Luongo, Orlando |
| Bamba, Kazuharu | Luzum, Matthew |
| Bambi, Cosimo | Magdy, Niseem |
| Barberio, Elisabetta | Maia, M. D. |
| Barnacka, Anna | Maluf, José Wadih |
| Barnich, Glenn | Marciano, Antonino |
| Barrau, Aurelien | Mariani, Camillo |
| Barrow, John | Marochnik, Leonid |
| Bartelmann, Matthias | Martin-Benito, Mercedes |
| Bass, Steven D. | Martín-Moruno, Prado |
| Beau, Mathieu | Mashhoon, Bahram |
| Beccaria, Matteo | Matthew, Durham J. |
| Beck, Douglas H. | Mavromatos, Nick E |
| Belli, Pierluigi | Mena-Marugan, Guillermo A. |
| Bellwied, Rene | Menezes, Gabriel |
| Berezhiani, Zurab | Miatto, Filippo M. |
| Bernuzzi, Sebastiano | Mielczarek, Jakub |
| Bhattacharya, Tanmoy | Mielke, Eckehard |
| Bicknell, Geoffrey | Mifsud, Jurgen |
| Bicudo, Pedro | Millington, Peter |
| Bielčík, Jaroslav | Miramonti, Lino |
| Biernat, Elmar | Misra, Ranjeev |
| Biesiada, Marek | Mitsou, Vasiliki |
| Bietenholz, Wolfgang Peter | Mizuno, Yosuke |
| Bisnovatyi-Kogan, Gennady S. | Modanese, Giovanni |
| Björn, Schenke | Moffat, John W. |
| Blaschke, David | Mondal, Tushar |
| Blasone, Massimo | Monthus, Cecile |
| Blázquez-Salcedo, Jose Luis | Moosa, Mudassir |
| Blok, Boris | Mortemousque, Pierre-Andre |
| Bodendorfer, Norbert | Moustakidis, Charalampos |
| Bojowald, Martin | Mück, Wolfgang |
| Bondarescu, Ruxandra | Nagy, Márton |
| Bonga, Beatrice | Nakayama, Yu |
| Bopp, Fritz W. | Nampalliwar, Sourabh |
| Bower, Richard | Nara, Yasushi |
| Bozapalidis, Symeon | Nättilä, Joonas |
| Bradley, Michael | Neiman, Yasha |
| Brahma, Suddhasattwa | Nester, James M. |
| Brandenberger, Robert H. | Nicolas, Chamel |
| Bravina, Larissa | Noiri, Akito |
| Bronnikov, Kirill | Nomura, Yasunori |
| Brown, Ethan | Novák, Tamás |
| Bulnes, Francisco | Nowakowski, Marek |
| Burdin, Sergey | Odintsov, Sergei |
| Cacciatori, Sergio | Oikonomou, Vasileios |
| Cai, Yi-Fu | Oles, Andrzej M. |
| Cao, Zhoujian | Onishchenko, Andrei |
| Capolupo, Antonio | Osato, Ken |
| Carrozza, Sylvain | Overduin, James |
| Casadio, Roberto | Ovgun, Ali |
| Catena, Riccardo | Pagani, Carlo |
| Celi, Alessio | Pagliara, Giuseppe |
| Cembranos, Jose | Paic, Guy |
| Chamoun, N. | Pajares, Carlos |
| Chang, Jin | Pal, Bilas K. |
| Chen, Chuan-Hung | Papp, Gábor |
| Chepel, Vitaly | Paraoanu, Gheorghe Sorin |
| Choi, Suyong | Park, Inyong |
| Choudhury, Sayantan | Paschos, Emmanuel A. |
| Christakoglou, Panagiotis | Pasechnik, Roman |
| Cleaver, Gerald | Passante, Roberto |
| Cohen, Elihau | Pásztor, Gabriella |
| Cohen, Thomas | Pelster, Axel |
| Combrinck, Ludwig | Percacci, Roberto |
| Contopoulos, Ioannis | Pereira, Antonio |
| Corda, Christian | Perlick, Volker |
| Cortes, Jose | Petrov, Albert |
| Craig, Nathaniel | Piattella, Oliver |
| Crkovska, Jana | Picanço, Rodrigo |
| Csanád, Máté | Piedipalumbo, Ester |
| Csörgő, Tamás | Pinčák, Richard |
| Dabrowski, Mariusz | Poletti, Dario |
| D'Agostino, Rocco | Povstenko, Yuriy |
| Dai, Liang | Pranzetti, Daniele |
| Danehkar, Ashkbiz | Pratt, Scott |
| Das, Saurya | Procureur, Sébastien |
| Das, Upasana | Providencia, Constança |
| Davies, Paul C. W. | Pruneau, Claude |
| De Diego, José A. | Pullin, Jorge |
| De Freitas-Pacheco, José Antonio | Qiu, Jian-Wei |
| De Martino, Ivan | Queiroz, Farinaldo |
| De Paolis, Francesco | Radi, Amr |
| Degollado, Juan Carlos | Radice, David |
| Del Popolo, Antonino | Rahvar, Sohrab |
| Del Zanna, Luca | Raidal, Martti |
| Deng, Xue-Mei | Ramirez, Cupatitzio |
| Deppman, Airton | Rampf, Cornelius |
| Dexheimer, Veronica | Ratti, Claudia |
| Di Marco, Alessandro | Reece, Matt |
| Dialektopoulos, Konstantinos | Rees, Martin |
| Doi, Takahiro | Reinhardt, Hugo |
| Dremin, Igor M. | Rey, Soo-Jong |
| Dulat, Falko | Ringer, Felix |
| Dvali, Georgi | Robbins, Daniel |
| Dymnikova, Irina | Robles-Perez, Salvador |
| Efroimsky, Michael | Rocha, Roldão Da |
| Eichhorn, Astrid | Rogatko, Marek |
| Elfner, Hannah | Rossi, Giancarlo |
| Escobedo Espinosa, Miguel Ángel | Rubiera-Garcia, Diego |
| Essén, Hanno | Rubin, David |
| Etzion, Erez | Rueda, Jorge |
| Evans, Justin | Rybczyński, Maciej |
| Fabris, Júlio | Ryblewski, Radoslaw |
| Fan, Xilong | Ryskin, Mikhail G. |
| Fendt, Christian | Saal, Margus |
| Feoli, Antonio | Sahlén, Martin |
| Fernando, Sharmanthie | Saikawa, Kenichi |
| Ferreira, Ricardo José Zambujal | Sanchez, Miguel |
| Fischbach, Ephraim | Santoni, Luca |
| Florkowski, Wojciech | Savelova, Elena |
| Fortin, Morgane | Sbitnev, Valery |
| Foschini, Luigi | Scampoli, Paola |
| Frey, Sandor | Schaefer, Bernd-Jochen |
| Friedman, Yaakov | Schäfer, Björn Malte |
| Gaitanos, Theodoros | Schee, Jan |
| García, J Antonio | Schmitt, Andreas |
| Garzelli, Maria Vittoria | Schulze-Makuch, Dirk |
| Gasperini, Maurizio | Sedrakian, Armen |
| Gazeau, Jean-Pierre | Senjanovic, Goran |
| Gergely, László | Shalyt-Margolin, Alexander |
| Gerosa, Davide | Shao, Lijing |
| Ghiglieri, Jacopo | Shapiro, Ilya |
| Gies, Holger | Shen, Chun |
| Ginsburg, Idan | Sheng, Yu-Bo |
| Giunti, C. | Shore, Graham |
| Glaser, Lisa | Shtanov, Yuri |
| Gong, Yungui | Siklér, Ferenc |
| González-Díaz, Diego | Singleton, Douglas |
| Gorbenko, Victor | Sitta, Mario |
| Gorda, Tyler | Słodkowski, Marcin |
| Gourgouliatos, Konstantinos | Smirnov, Alexei |
| Gralla, Samuel E. | Soda, Jiro |
| Grunfeld, Ana Gabriela | Solà, Joan |
| Gubitosi, Giulia | Speziale, Simone |
| Guendelman, Eduardo | Steinhaus, Sebastian |
| Gupt, Brajesh | Stergiou, Andreas |
| Haggard, Hal | Stuchlík, Zdeněk |
| Halliwell, Jonathan | Sultana, Joseph |
| Hanauske, Matthias | Sun, Jia Rui |
| Hatfield, Peter | Sushkov, Sergei |
| Hawley, John | Tawfik, Abdel Nasser |
| Hehl, Friedrich W. | Tempo, David |
| Helayel-Neto, J. A. | Tenkanen, Tommi |
| Heller, Michał | Tessarotto, Massimo |
| Hendi, Seyed Hossein | Tetradis, Nikolaos |
| Herdeiro, Carlos | Thompson, Lee |
| Hidalgo, Gabriel Flores | Toriumi, Reiko |
| Higinbotham, Douglas | Torrieri, Giorgio |
| Hiramatsu, Takashi | Tsukamoto, Naoki |
| Hobill, David | Tsupko, Oleg |
| Hoff Da Silva, Julio M. | Typel, Stefan |
| Hofmann, Ralf | Ulhoa, Sérgio Costa |
| Hohmann, Manuel | Vacca, Gian Paolo |
| Horwitz, Lawrence | Vagnozzi, Sunny |
| Huang, Wister | Valcarcel, Jorge Gigante |
| Huber, Markus Q. | Van Den Hoogen, Robert |
| Ivanov, Yu. B. | Van Hees, Hendrik |
| Jegerlehner, Fred | Velten, Hermano |
| Johnson-McDaniel, Nathan | Venanzoni, Graziano |
| Jones, Benjamin | Vento, Vicente |
| Jordan, Andrew | Vergara, José David |
| Joyce, Michael | Vertesi, Robert |
| Jurčišinová, Eva | Vitev, Ivan |
| Jurić, Tajron | Vittino, Andrea |
| Kaimakamis, George | Vogt, Ramona |
| Kajantie, Keijo | Voskresensky, Dmitry N. |
| Kamenshchik, Alexander Yu. | Vovchenko, Volodymyr |
| Kaminker, Alexander D. | Wahlberg, Hernan |
| Karpenko, Iurii | Wang, Michael H.L.S. |
| Karsch, Frithjof | Wang, Sai |
| Kashi, Amit | Wei, Hanyu |
| Keresztes, Zoltan | Werner, Klaus |
| Khaw, Kim Siang | Wieland, Wolfgang |
| Khurshudyan, Martiros | Wiggins, Brandom |
| Kibler, Maurice R. | Will, Clifford M. |
| Kim, Yong-Su | Wimberger, Sandro |
| Kimura, Rampei | Wlodarczyk, Zbigniew |
| Kirillov, Alexander | Wolf, Marek |
| Kleidis, Kostas | Wu, Dufan |
| Kobayashi, Tsutomu | Xiaofeng, Luo |
| Kolomeitsev, Evgeni | Xu, Donglian |
| Kopeikin, Sergei | Yang, Run-Qiu |
| Kosloff, Ronnie | Yasusada, Nambu |
| Kotanjyan, Anna | Yokomizo, Nelson |
| Kotikov, Anatoly | Yu, Xiaoquan |
| Kovács, Péter | Yuan, Feng |
| Kozlov, Mikhail | Zabrodin, Evgeny |
| Krajewski, Thomas | Zaccolo, Valentina |
| Krämer, Manuel | Zakharov, Alexander F. |
| Krishnan, Chethan | Zanelli, Jorge |
| Krizek, Filip | Zaninetti, Lorenzo |
| Krssak, Martin | Zárate, Laura Rosales |
| Kuang, Xiao-Mei | Zavala, Jesus |
| Lagos, Macarena | Zdunik, Julian Leszek |
| Lambiase, Gaetano | Zhidenko, Olexandr |
| Lavagno, Andrea | Zilhao, Miguel |
| Lebiedowicz, Piotr | Zimdahl, Winfried |
| Lecian, Orchidea Maria | Zinoviev, Yurii |
| Lee, Chung-Chi | Zipfel, Antonia |
| Lee, Hayden | Zlosnik, Thomas |
| Lepe, Samuel | Zou, Yuanchuan |
© 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/).