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多；

Cesarean delivery on maternal request in southeast China.
Severe Obstetric Morbidity in the United States: 1998鈥5
Prevalence of lysosomal storage disorders
Low and very low birth weight in infants conceived with use of assisted reproductive technology.
Prevalence of symptomatic pelvic floor disorders in US women.
Endogenous sex hormones and incident fracture risk in older men: the dubbo osteoporosis epidemiology study.
The Genera of Flowering Plants
Live-birth rates and multiple-birth risk using in vitro fertilization.
Identification of a gene which controls the incubation period of some strains of scrapie agent in mice
Fecal incontinence in US adults: epidemiology and risk factors.