The national ambulatory medical care survey.
D000553:Ambulatory Care; D001291:Attitude of Health Personnel; D006306:Health Surveys; D008499:Medical Records; D008722:Methods; D010820:Physicians; D011364:Professional Practice; D011641:Public Relations; D011786:Quality Control; D012494:Sampling Studies; D013223:Statistics as Topic; D013997:Time Factors; D014481:United States