Hello, You asked: > Did you read Vonnegut's Syracuse Commencement Address of 1994. No, it but sounds inspirational. Regarding your survey, I had major surgery (abominable - oops - make that abdominal) in 1987; PD symptoms appeared in 1989-90; diagnosis in 1990. Do you think that people who had surgery or general anesthesia might respond to the survey at a different rate than people who didn't? Phil Tompkins