The fundamental issue of diagnosis.
Farmer
Evan R
ER
D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D006801:Humans; D008544:Melanocytes / Q000473:pathology*; D008545:Melanoma / Q000473:pathology*; D010338:Pathology, Clinical / Q000592:standards; D010859:Pigmentation Disorders / Q000473:pathology*; D012878:Skin Neoplasms / Q000473:pathology*