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. 2012 Jul 2;2(4):e000990. doi: 10.1136/bmjopen-2012-000990

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© 2012, Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-commercial License, which permits use, distribution, and reproduction in any medium, provided the original work is properly cited, the use is non commercial and is otherwise in compliance with the license. See: http://creativecommons.org/licenses/by-nc/2.0/ and http://creativecommons.org/licenses/by-nc/2.0/legalcode.

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Distributions of sperm counts and morphologically normal spermatozoa in Danish men from the general population and fertile Danish men (partners of pregnant women). All men had durations of ejaculation abstinence above 48 h. Sperm concentration (A) total sperm counts (B) and percentages of morphologically normal spermatozoa (C) were lower in men from the general population.