作者单位：
Clinic for Cattle, University of Veterinary Medicine Hannover Foundation, Hannover, Germany
[1]
Clinic for Obstetrics, Gynecology and Andrology of Large and Small Animals, Justus-Liebig University Giessen, Giessen, Germany
[2]
Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
[3]
发布时间
2014-04-25
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