Cited 4 times since 2019 (0.7 per year) source: EuropePMC Psychotherapy and psychosomatics, Volume 89, Issue 1, 25 4 2019, Pages 54-55 Long-Term Outcome of Treatment for Persistent Depressive Disorder: A Naturalistic Follow-Up Study. Emmelkamp J, Kooistra L, Van Oppen P, Van Schaik D, Hoogendoorn A, Dekker J, Beekman A, McCullough J, Wiersma J