BOHMAN H., JONSSON U., PÄÄREN A., VON KNORRING A.-L., OLSSON G., and VON KNORRING L. “Long-Term Follow-up of Adolescent Depression. A Population-Based Study”. Upsala Journal of Medical Sciences, vol. 115, no. 1, Jan. 2010, pp. 21–29, doi:10.3109/03009730903572057.