Effectiveness of policy related research: nurse-midwifery as case study.
D005069:Evaluation Studies as Topic; D005380:Financing, Government; D006291:Health Policy; D008427:Maternal Health Services / Q000331:legislation & jurisprudence; D009721:Nurse Midwives / Q000191:economics / Q000331:legislation & jurisprudence*; D011057:Politics; D011361:Professional Competence; D012106:Research; D014481:United States