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
A 10 month old female mixed breed dog was presented to the ISU Veterinary Clinic for an ovariohysterectomy. A patent ductus arteriosus was diagnosed and surgically corrected. Aortic pressures and angiocardiographic studies were also performed.
"Patent Ductus Arteriosus,"
Iowa State University Veterinarian: Vol. 40
, Article 3.
Available at: http://lib.dr.iastate.edu/iowastate_veterinarian/vol40/iss2/3