van Balkom A J, de Beurs E, Koele P, Lange A, van Dyck R
Department of Psychiatry, Institute for Research in Extramural Medicine, Vrije Universiteit, Amsterdam, The Netherlands.
J Nerv Ment Dis. 1996 Feb;184(2):133-5. doi: 10.1097/00005053-199602000-00015.