title: Therapy and clinical trials.
mesh_terms: D000375:Aging / Q000378:metabolism*; D002784:Cholesterol / Q000378:metabolism*; D002986:Clinical Trials as Topic; D005260:Female; D020249:Hormone Replacement Therapy; D006801:Humans; D006937:Hypercholesterolemia / Q000208:ethnology / Q000628:therapy*; D008297:Male; D012907:Smoking; D013997:Time Factors