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 59 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 45 days. The editors would like to express their sincere gratitude to the following reviewers for their generous contribution in 2019:
| Abrunhosa, Antero J. | Markides, Christos N. |
| Albano, Maurizio | Martins, Anabela Correia |
| Amato, Ernesto | Mateos, Xavier |
| Andersson, Jan | Meer, David |
| Antoine, Claire Z. | Mehn, Dora |
| Apsimon, Robert | Merlino, Giovanni |
| ARAUJO, EVANDO | Michalczewski, Remigiusz |
| Avila Rodriguez, Miguel Angel | Molenaar, Remco J. |
| Azzi, Patrizia | Monica-Maria, Baia |
| Baffa, Oswaldo | Muratori, Bruno |
| Becker, Wilhelm | Nagit, Gheorghe |
| Belsley, Michael Scott | Nica, Petru |
| Bertocci, Francesco | Nickles, Jerry |
| Biswas, Abhijit | Nishiguchi, Hajime |
| Bizon, Nicu | Nishimori, Nobuyuki |
| Boso, Gianluca | Nortier, Meiring |
| Brooks, Stephen | Nozzoli, Francesco |
| Campbell, Geoff | Olofsson, Thomas |
| Carminati, Federico | Palladino, Vito |
| Casalbuoni, Sara | Pandey, Mukesh K. |
| Cianchi, Alessandro | Parfenov, Evgeny |
| Cifuentes, Carlos A. | Parigger, Christian |
| Ciprian, Dalibor | Patel, Trushar R. |
| Colas, Paul | Peaudecerf, Bruno |
| Conteduca, Donato | Pelosi, Claudia |
| Contini, Davide | Penco, Giuseppe |
| Corner, Laura | Penn, Gregory |
| Costello, Ben De Lacy | Petrillo, Vittoria |
| Curbis, Francesca | Phelps, Alan |
| DeGrado, Timothy R. | Pompili, Riccardo |
| Di Pietro, Paola | Rebernik Ribič, Primož |
| Diaz Zamboni, Javier Eduardo | Rodríguez, Manuel Díaz |
| Díaz, José | Roedel, Christian |
| Dordevic, Sasa V. | Rokosz, Krzysztof |
| Engle, Jonathan | Rosado, Jaime |
| Ermert, Johannes | Rosenzweig, James |
| Esposito, Flavio | Rossi, Andrea Renato |
| Esposito, Juan | Rydosz, Artur |
| Fernández-Caramés, Tiago M. | Saikko, Vesa |
| Fiore, Salvatore | Salazar-Serrano, Luis José |
| Floettmann, Klaus | Schächter, Levi |
| Gasparini, Leonardo | Schippers, Jacobus Maarten |
| Gazis, Evangelos | Scott, David |
| Giacomini, Renato | Seifert, Andreas |
| Giammanco, Andrea | Seimbille, Yann |
| Groppi, Flavia | Selivanova, Svetlana V. |
| Gulotta, Davide | Selvaganapathy, P. Ravi |
| Hastings, Jerome | Sertore, Daniele |
| He, Zhaoming | Sidebottom, Mark |
| Heikkinen, Pauli | Siders, Craig W. |
| Hein, Joachim | Sinha Ray, Sumit |
| Hirose, Yutaka | Sosolik, Chad |
| Höhr, Cornelia | Sowa, Maciej |
| Howcroft, Jennifer | Stellato, Francesco |
| Huang, Zhirong | Stevens, Martin J |
| Illangakoon, U.Eranka | Steyn, Deon |
| Jalilian, Amirreza | Suwada, Tsuyoshi |
| James, Stephen | Tanaka, Takashi |
| Jensen, Mikael | Thaury, Cédric |
| John, Kevin D. | Tinti, Gemma |
| Johnson, Robert P. | Tipping, Jill |
| Juodkazis, Saulius | Tonev, Dimitar |
| Kanik, Mehmet | Tosi, Alberto |
| Karakatsanis, Nikolaos A. | Türler, Andreas |
| Karsch, Stefan | Vermeulen, Christiaan Etienne |
| ΚΑΛΕΦ-ΕΖΡΑ, ΤΖΩΝ | Viáfara, Cristian C. |
| Khodzhibagiyan, Hamlet | Villa, Federica |
| Kim, Hyung Taek | Vinokurov, Nikolay |
| Kockelmann, Winfried | Wales, Dominic |
| Kostamovaara, Juha | Wei, Hanyu |
| Kreslo, Igor | Willmott, Jon Raffe |
| Li, Selina | Winters, Brandon |
| Lindberg, Ryan | Yan, Xueliang |
| Lista, Luca | Yeo, Joo Chuan |
| Liu, Fangze | Yu, Anthony |
| Loisch, Gregor | Zeisler, Stefan |
| Lu, Chao | Zen, Heishun |
| Maggiore, Mario | Zhang, Zhedong |
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