Reflections on certification {comment}.
N H
NH
Gottlieb
K R
KR
McLeroy
D000288:Administrative Personnel / Q000193:education; D002568:Certification; D005544:Forecasting; D006293:Health Promotion; D006801:Humans; D009786:Occupational Health Services / Q000458:organization & administration*; D011361:Professional Competence / Q000592:standards; D014481:United States