The British Hypertension Society protocol for the evaluation of automated and semi-automated blood pressure measuring devices with special reference to ambulatory systems [see comments] - O'Brien,E.; Petrie,J.; Littler,W.; de Swiet,M.; Padfield,P.L.; O'Malley,K.; Jamieson,M.; Altman,D.; Bland,M.; Atkins,N. (J Hypertens, 1990)