Outsourcing of ultrasound services in obstetrics and gynecology.
Roberts
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D002983:Clinical Competence; D006176:Gynecology / Q000193:education / Q000458:organization & administration*; D006801:Humans; D009774:Obstetrics / Q000193:education / Q000458:organization & administration*; D020416:Outsourced Services / Q000191:economics / Q000458:organization & administration*; D016216:Ultrasonography, Prenatal / Q000191:economics / Q000592:standards