title: The nature of circulating estrogen.
authors.forename: C M
authors.initials: CM
authors.lastname: SZEGO
authors.forename: S
authors.initials: S
authors.lastname: ROBERTS
mesh_terms: D000337:Aerospace Medicine; D001359:Aviation / Q000009:adverse effects* / Q000473:pathology* / Q000502:physiology*; D045166:Estradiol Congeners; D004967:Estrogens / Q000097:blood*; D006801:Humans
chemical_list: D045166:Estradiol Congeners; D004967:Estrogens
keywords: AVIATION AND AVIATORS/physiologic and pathologic effects; ESTROGENS/circulating; ESTROGENS/in blood