Arias, F.; Szerman, N.; Vega, P.; Mesias, B.; Basurte, I.; Morant, C.; Ochoa, E.; Poyo, F.; Babin, F. Abuse or Dependence on Cannabis and Other Psychiatric Disorders. Madrid Study on Dual Pathology Prevalence. Actas Esp Psiquiatr 2013, 41, 122-129.