Comorbidity of DSM-III–R major depressive disorder in the general population: Results from the US National Comorbidity Survey

Kessler, Ronald C; McGonagle, Katherine A; Nelson, Christopher B; Liu, Jinyun. (1996). Comorbidity of DSM-III--R major depressive disorder in the general population: Results from the US National Comorbidity Survey. British Journal of Psychiatry. 168(30), 17-30.