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Keywords: menstrual cycle length
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Journal Articles
J Exp Biol (2001) 204 (18): 3141–3150.
Published: 15 September 2001
... (Peruvian Quechua at 4000m, Bolivian Quechua at 3100m, Bolivian Aymara at 4000m). Data on ovarian function suggest that neither progesterone levels nor menstrual cycle length or regularity are significantly different from those of women at lower altitudes. Data on two behavioral factors that determine...