Journal article
Canadian semen quality: an analysis of sperm density among eleven academic fertility centers
Abstract
OBJECTIVE: To determine whether sperm quality has declined among Canadian men during the past 13 years and whether there are regional differences in sperm quality.
DESIGN: Retrospective temporal series of cross-sectional studies.
Authors
Younglai EV; Collins JA; Foster WG
Journal
Fertility and Sterility, Vol. 70, No. 1, pp. 76–80
Publisher
Elsevier
Publication Date
July 1998
DOI
10.1016/s0015-0282(98)00118-6
ISSN
0015-0282