H. Ballentine Carter, MD, is a professor of urology and oncology and the director of adult urology at the Johns Hopkins University School of Medicine. An internationally recognized expert in the diagnosis and treatment of prostate disease, Dr. Carter directs the Proactive Surveillance Program for prostate cancer at Johns Hopkins.
Gerald Secor Couzens is the author and coauthor of more than two dozen books about health, medical topics, and sports. He also writes for various publications, including The New York Times. Couzens is the co-creator and, for the past fifteen years, the managing editor of The Johns Hopkins Prostate Bulletin.