Iowa State University Veterinarian Records, RS 22/6/0/9, University Archives, Special Collections Department, Iowa State University, http://www.add.lib.iastate.edu/spcl/arch/rgrp/22-6-0-9.html
Episioplasty or plastic repair of the vulvo-perineal region is indicated in the case of the barren broodmare whose infertility is due to faulty conformation in this region or to vulvar defects. By means of this relatively simple operation, otherwise useless mares may be returned to the ranks of valuable producers.
Hensley, Robert M.
"Episioplasty In The Broodmare,"
Iowa State University Veterinarian: Vol. 16
, Article 4.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol16/iss1/4