1. E2B(R3) electronic transmission of Individual Case Safety Reports (ICSRs) implementation guide: data elements and message specification Publication: Silver Spring, MD : Center for Drug Evaluation and Research, April 2022 Subject(s): Adverse Drug Reaction Reporting SystemsDrug and Narcotic ControlElectronic MailUnited StatesUnited States. Department of Health and Human ServicesUnited States. Food and Drug Administration