Focus on physicians.
Weiss
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D001291:Attitude of Health Personnel; D015142:Baltimore; D002410:Catholicism; D003142:Communication; D006744:Hospital Bed Capacity, 100 to 299; D016304:Hospitals, Private / Q000458:organization & administration*; D006801:Humans; D008389:Marketing of Health Services / Q000458:organization & administration*; D008824:Michigan; D010820:Physicians; D012017:Referral and Consultation