title: Corporate interests necessitate conflict of interest declarations by all authors.
authors: Cleveland Clinic, Cleveland, Ohio. kmpnpm@yahoo.com.
authors: Paul Martin
authors: PM
authors: Kempen
mesh_terms: D000776:Anesthesiology / Q000193:education*; D004503:Education, Medical, Graduate / Q000592:standards*; D004521:Educational Measurement / Q000379:methods*; D006801:Humans