1. Departments of Obstetrics and Gynecology, Hematology and Oncology, Urology, and Surgery at Scripps Clinic, La Jolla, CA.
2. Dog trainers were independent volunteers.
3. College of Veterinary Medicine, Auburn University, Auburn, AL.
4. Independent contributor; Del Mar, CA.
5. The Scripps Research Institute, La Jolla, CA.