Acknowledgment to Reviewers of Hearts in 2021

Rigorous peer-reviews are the basis of high-quality academic publishing. Due to the great efforts of our reviewers, Hearts was able to maintain its standards for the high quality of its published papers. The editors would like to extend their gratitude and recognition to the following reviewers for their precious time and dedication, regardless of whether the papers they reviewed were finally published

Addison, Clifton	Krings, Gregor
Alaimo, Alessandro	Kuwata, Shingo
Argenziano, Mariana	Labrosciano, Clementine
Bertomeu-González, Vicente	Marateb, Hamid Reza
Bianco, Francesco	Masarone, Daniele
Boulanger, Pierre	Mlynarska, Agnieszka
Bozic, Josko	Morisco, Carmine
Butera, Gianfranco	Naydenov, Stefan
Cairrão, Elisa	Novakovic, Ivana
Campioni, Paolo	Olesen, Morten
Capoccia, Massimo	Paavola, Jere
Celentano, Eduardo	Park, Junbeom
Chang, Po-Cheng	Parreira, Leonor
Chen, Yuan-Ho	Pavo, Noemi
Ciavarella, Domenico	Perez Alday, Erick Andres
Ciliberti, Giuseppe	Rigopoulos, Angelos G.
Cluitmans, Matthijs	Riou, Laurent M.
D'Elia, Emilia	Roche, Ellen
Doi, Shinichiro	Rubel, Paul
Donazzan, Luca	Saito, Yuichi
Fabritz, Larissa	Sandhu, Satinder K.
Forte, Giuseppe	Sangiorgi, Giuseppe
Gheysens, Olivier	Schwerin, Belinda
Ghinassi, Barbara	Sławiński, Grzegorz
Grautoff, Steffen	Stümper, Oliver F. W.
Hagler, Donald J.	Tarnowski, Maciej
Hai-Lin, Kurahara	Tong, Mingming
Hostiuc, Sorin	Trohman, Richard
Huang, Wenrui	Urbanowicz, Tomasz
Jacheć, Wojciech	Van Den Brink, Floris S.
Jaime, Diego Franco	Verhoeven, Adrie
Ka̧dziela, Jacek	Vettukattil, Joseph John
Kantor, Paul F.	Vlachos, Ilias
Kovacevic, Alexander