Elliott R A, Payne K, Moore J K, Davies L M, Harper N J N, St Leger A S, Moore E W, Thoms G M M, Pollard B J, McHugh G A, Bennett J, Lawrence G, Kerr J
School of Pharmacy & Pharmaceutical Sciences, University of Manchester, Manchester, UK.
Health Technol Assess. 2002;6(30):1-264. doi: 10.3310/hta6300.