Funding for this research was provided by:
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (912-10-020, 481-08-011, 463-06-001, 904-61-193, 904-61-090, 985-10-002, Addiction-31160008, 016-115-035, 451-04-034, NWO-Groot 480-15-001/674, OCW_NWO Gravity program –024.001.003, NWO-Middelgroot-911-09-032, 400-05-717, 985-10-002, 480-04-004, 056-32-010)
European Science Foundation (EU/QLRT-2001-01254)
FP7 Health (602768: ACTION, 01413: ENGAGE)
H2020 European Research Council (ERC AG 230374, ERC SG 284167, ERC CG 771057)
National Institutes of Health (NIH R01 DK092127-04)
Biobanking and Biomolecular Resources Research Initiative (184.021.007)
Biobanking and Biomolecular Resources Research Infrastructure (184.033.111)
Spinozapremie (NWO- 56-464-14192)
KNAW Academy Professor Award (PAH/6635)
Avera Institute for Human Genetics
Received: 28 August 2018
Accepted: 30 January 2019
First Online: 4 February 2019
Ethics approval and consent to participate
: All participants of the Netherlands Twin Register 18 years and older signed a written informed consent, for participants younger than 18 years the written informed consent was signed by their primary caregiver. All protocols for data collection were approved by the Medical Research Ethics Committee of the VU University.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.