Investigator Guidance Series (IGS) This page serves as a central hub for all of the IGS documents. Topics are updated regularly; this page should be the starting point for any coordinator with a question about IRB policy on a specific topic. IGS Search Form Advanced Search Dropdown Advanced SearchTags Search Submit Clear Search If you are human, leave this field blank. Add New IGS Research Involving Children Last Updated: February 2, 2022 View Document Tracked Changes