About the Authors
Interdisciplinary Center for Psychiatric Epidemiology and Graduate School of Medical Sciences, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
The authors have declared that no competing interests exist.
Analyzed the data: JGMR AJO. Wrote the first draft of the manuscript: JGMR AJO. Contributed to the writing of the manuscript: JGMR AJO. ICMJE criteria for authorship read and met: JGMR AJO. Agree with manuscript results and conclusions: JGMR AJO.