Nurses' roles expanded.
D002641:Chicago; D003153:Community Health Services; D003191:Comprehensive Health Care; D004509:Education, Nursing, Continuing; D009738:Nursing Service, Hospital; D009741:Nursing Staff, Hospital / Q000706:statistics & numerical data*; D009743:Nursing, Practical / Q000193:education; D010371:Pediatric Nursing / Q000193:education; D013041:Specialties, Nursing / Q000193:education; D013678:Technology, Pharmaceutical; D000078329:Workforce