Commentary by Michael Nevins, M.D., author of Jewish Medicine: What it is and Why it Matters and A Tale of Two "Villages": Vineland and Skillman, NJ. This commentary written in conjunction with an exhibit at New York University School of Medicine, Sept. 24-Oct.19: Art and Medicine in Terezin. All of us felt a sense of sliding helplessness, again and again, day after day, night after night, you descended toward the abyss whose bottom was unfathomable….you felt only the downward movement, t