Vilaplana, M., et al. “Validation in Spanish Population of the Family Objective and Subjective Burden Interview (ECFOS-II) for Relatives of Patiens With Schizophrenia”. Actas Españolas De Psiquiatría, vol. 35, no. 6, Nov. 2007, pp. 372-81, https://actaspsiquiatria.es/index.php/actas/article/view/967.