These Expert Consensus Statements (ECS) were developed by the AAO-HNSF. ECS reflect opinions synthesized from an organized group of experts into a written document. ECS should reflect the expert views of a panel of individuals who are well-versed on the topic of interest while carefully examining and discussing the scientific data available. They are not to be confused with a formal evidence review and are not developed in accordance with clinical practice guidelines. Additionally, consensus statements are not intended as legal documents or a primary source of detailed technical information.