Eur. j. psychol. open Eur. j. psychol. open Mental Health Status of Healthcare Workers During the COVID-19 Outbreak An International Study Nicolaou C Menikou J Lamnisos D Lubenko J Presti G Squatrito V Constantinou M Papacostas S Aydin G Chong YY Chien WT Cheng HY Ruiz FJ Segura-Vargas MA Garcia-Martin MB Obando-Posada DP Vasiliou VS McHugh L Hofer S Baban A Neto DD da Silva AN Monestes JL Alvarez-Galvez J Paez-Blarrina M Montesinos F Valdivia-Salas S Universidad de Zaragoza Ori D Kleszcz B Lappalainen R Ivanovic I Gosar D Dionne F Merwin RM Kassianos AP Karekla M Gloster AT 2021 research-article