Garrido Fernández, M., et al. “Family Typology and Deterioration Related to Opioids Use, in a Methadone Treatment Patients Group”. Actas Españolas De Psiquiatría, vol. 38, no. 4, July 2010, pp. 196-03, https://actaspsiquiatria.es/index.php/actas/article/view/786.