The firstborn phenomenon among psychiatric residents.
D000124:Achievement; D001722:Birth Order; D005196:Family Therapy / Q000193:education; D006801:Humans; D007396:Internship and Residency; D008297:Male; D010551:Personality; D011567:Psychiatric Department, Hospital; D011570:Psychiatry / Q000193:education*; D013337:Students, Medical; D011795:Surveys and Questionnaires; D014481:United States