Engstrom, Eric J. Max Planck Institute of Psychiatry, Max Planck Society; external;
Kendler, K. S., & Engstrom, E. J. (2017). Kahlbaum, Hecker, and Kraepelin and the Transition From Psychiatric Symptom Complexes to Empirical Disease Forms. AMERICAN JOURNAL OF PSYCHIATRY, 174(2), 102-109. doi:10.1176/appi.ajp.2016.16030375.