U.S. Sperm Trend Conclusions
نویسندگان
چکیده
منابع مشابه
U.S. sperm trend conclusions.
The letter written by Heinze (1) has serious shortcomings. Heinze wrote that There is not a single study of healthy men from any fertility center or sperm bank that has reported a decline in sperm counts in the United States. This is not true. A number of such studies exist. Leto and Frensilli (2) documented a decline in sperm counts in potential sperm donors from all over the United States in ...
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ژورنال
عنوان ژورنال: Environmental Health Perspectives
سال: 1999
ISSN: 0091-6765
DOI: 10.2307/3454451