Explaining primary care visits.
D000293:Adolescent; D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009042:Motivation; D009722:Nurse Practitioners / Q000706:statistics & numerical data*; D009730:Nursing Assessment; D010361:Patients / Q000523:psychology*; D011320:Primary Health Care