Motivations, beliefs and expectations of Spanish nurses planning migration for economic reasons: a cross-sectional, web-based survey - Gea-Caballero, V; Castro, Sanchez EM; Diaz-Herrera, MA; Sarabia-Cobo, C; Juarez-Vela, R; Zabaleta, del Olmo E (Journal of Nursing Scholarship, 2019)