Allergy Practice during the early years.
D002983:Clinical Competence; D005194:Family Practice / Q000193:education / Q000266:history; D049673:History, 20th Century; D006801:Humans; D006967:Hypersensitivity / Q000175:diagnosis / Q000266:history*; D007167:Immunotherapy / Q000266:history; D007388:Internal Medicine / Q000266:history; D010414:Pennsylvania; D012882:Skin Tests