By Professor Nicholas J. Talley, MD (NSW), PhD (Syd), MMedSci (Clin Epi)(Newc.), FAHMS, FRACP, FAFPHM, FRCP (Lond. & Edin.), FACP, Simon O'Connor, FRACP DDU FCSANZ
By Roberta B. Shepherd, MA, EdD (Columbia), FACP, J. Carr
