1 Department Neuropsychiatric Disorders, Netherlands Institute for Neuroscience, an Institute of the Royal Netherlands Academy of Arts and Sciences, Amsterdam, The Netherlands. Electronic address: d.f.swaab@nin.knaw.nl.
2 Hypothalamic Integration Mechanisms Laboratory, Department of Cellular Biology and Physiology, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México (UNAM), Ciudad de México, Mexico.
3 Department Pediatrics, OLVG Hospitals, Amsterdam, The Netherlands.
4 Brain Plasticity Group, Swammerdam Institute for Life Sciences, University of Amsterdam, Amsterdam, The Netherlands.
5 Department of Psychiatry and Behavioral Sciences, Stanford Medical School, Palo Alto, CA, United States.