The central Veterans Affairs (VA) institutional review board (IRB) approved the MVP study. All relevant ethical regulations for work with human subjects were followed in the conduct of the study and informed consent was obtained from all participants. The iPSYCH study was approved by the scientific ethics committee in the Central Denmark Region (case no. 1-10-72-287-12) and the Danish Data Protection Agency. The QIMR Berghofer study was approved by the QIMR Berghofer Medical Research Institute Human Research Ethics Committee. The Yale–Penn study was approved by Yale Human Research Protection Program and University of Pennsylvania IRB.
