adverseeffects breast breastneoplasms cancer congresses drugtherapy endocrinology estrogen estrogenreplacementtherapy etiology fitness growthdisorders growthhormone health hormonereplacementtherapy hormonetherapy medical menopause metabolism pathology pathophysiology physiologicaleffect physiology qs677w9265t1990 research riskfactors somatotropin therapeuticuse therapy turner'ssyndrome turnersyndrome women'shealth wp870m652e1996