2001
Sperm Morphology, Motility, and Concentration in Fertile and Infertile Men
Guzick D, Overstreet J, Factor-Litvak P, Brazil C, Nakajima S, Coutifaris C, Carson S, Cisneros P, Steinkampf M, Hill J, Xu D, Vogel D. Sperm Morphology, Motility, and Concentration in Fertile and Infertile Men. New England Journal Of Medicine 2001, 345: 1388-1393. PMID: 11794171, DOI: 10.1056/nejmoa003005.Peer-Reviewed Original Research
1999
Incidence and risk factors for ectopic pregnancy.
Pisarska M, Carson S. Incidence and risk factors for ectopic pregnancy. Clinical Obstetrics & Gynecology 1999, 42: 2-8; quiz 55-6. PMID: 10073294, DOI: 10.1097/00003081-199903000-00004.Peer-Reviewed Original Research