[Letter: Estrogen deficiency and osteoporosis].
D002118:Calcium / Q000652:urine; D002979:Climacteric; D003677:Deficiency Diseases / Q000150:complications; D004967:Estrogens / Q000378:metabolism*; D005260:Female; D006801:Humans; D010024:Osteoporosis / Q000209:etiology / Q000378:metabolism*
D004967:Estrogens; D002118:Calcium
Ostrogenmangel und Osteoporose