Canada Health Infoway Sex and Gender Working Group: https://infocentral.infoway-inforoute.ca/en/collaboration/wg/sex-gender
HL7 Anatomical Inventories & Person Characteristics Page: https://confluence.hl7.org/display/OO/Anatomical+Inventory+and+Person+Characteristics
School of Health Information Science: https://www.uvic.ca/hsd/hinf/