English-language web portal for the World Health Organization.

"The sixth edition of the WHO Manual for the Laboratory Examination and Processing of Human Semen is a reference document for procedures and methods for the laboratory examination and processing of human semen, which are intended to maintain and sustain the quality of analysis and the comparability of results from different laboratories."

This website is the CDC's primary online communication channel. CDC.gov provides users with credible, reliable health information on a variety of topics.

"CDC collects the data from all fertility clinics in the United States and calculates standardized success rates for each clinic."

"ASRM is a multidisciplinary organization dedicated to the advancement of the science and practice of reproductive medicine. The Society accomplishes its mission through the pursuit of excellence in education and research and through advocacy on behalf of patients, physicians, and affiliated health care providers."

SART is the primary organization of professionals dedicated to the practice of assisted reproductive technologies (ART) in the United States.