This study was approved by the institutional review board at Washington University School of Medicine and was done in accordance with all relevant ethical regulations. Investigators for each contributing study obtained informed consent from their participants and received ethics approvals from their respective review boards in accordance with applicable regulations. Personal identifiers associated with phenotypic information and samples from deCODE were encrypted using a third-party encryption system.10 The iPSYCH group used pseudonymised unique identifications.9
