title: Low 1,25-dihydroxyvitamin D in heparin-induced osteopenia.
mesh_terms: D000328:Adult; D001851:Bone Diseases, Metabolic / Q000139:chemically induced*; D001842:Bone and Bones / Q000378:metabolism; D004100:Dihydroxycholecalciferols / Q000378:metabolism*; D005260:Female; D006493:Heparin / Q000009:adverse effects*; D006801:Humans; D006887:Hydroxycholecalciferols / Q000378:metabolism*; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular / Q000188:drug therapy*; D013927:Thrombosis / Q000188:drug therapy*
chemical_list: D004100:Dihydroxycholecalciferols; D006887:Hydroxycholecalciferols; D006493:Heparin