https://www.moh.gov.sa/en/Ministry/ehealthstd/Documents/eHealth Standards Files/eReferral and eTransfer 2/IS0011 Saudi eHealth Core IS for eReferral and eTransfer Workflow v1.0.pdf
https://www.moh.gov.sa/en/Ministry/Structure/AssistantAgencies/PreventiveHealth/SDMU/Documents/Public Health Surveillance Technical Guidlines 2017.pdf