Personal versus telephone interviews: effect on responses.
D001291:Attitude of Health Personnel; D003142:Communication; D007398:Interpersonal Relations; D008722:Methods; D009515:New Jersey; D009518:New York; D010820:Physicians; D011287:Prejudice; D012494:Sampling Studies; D012928:Social Desirability; D011795:Surveys and Questionnaires