O’Brien E, Atkins N, Staessen J. State of the Market: a review of ambulatory blood pressure monitoring devices. Hypertension 1995;26:835-842.
O’Brien E. Automated blood pressure measurement: state of the market in 1998 and the need for an international validation protocol for blood pressure measuring devices. Blood Pressure Monit 1998;3:205-211
O’Brien E, Waeber B, Parati G, Staessen G, Myers MG. on behalf of the European Society of Hypertension Working Group on Blood Pressure Monitoring. Blood pressure measuring devices: recommendations of the European Society of Hypertension. BMJ 2001:322:531-536
O’Brien E. State of the market in 2001 for blood pressure measuring devices. Blood Press Monit 2001;6:171-176
O’Brien E. A website for blood pressure measuring devices: dableducational.com. Blood Pressure Monit 2003, 8:177–180
O’Brien E, Atkins N. State-of-the-market from the dableducational.org website. Blood Press Monit 2007;21:377-379