U.S. sperm trend conclusions.
James
W H
WH
D003625:Data Collection; D004785:Environmental Pollutants / Q000009:adverse effects*; D006801:Humans; D007248:Infertility, Male / Q000453:epidemiology; D008297:Male; D013081:Sperm Motility; D014481:United States / Q000453:epidemiology
D004785:Environmental Pollutants