Pashkow P, Ades P A, Emery C F, Frid D J, Houston-Miller N, Peske G, Reardon J Z, Schiffert J H, Southard D, Zu Wallack R L
Heart Watchers International, Solon, OH, USA.
J Cardiopulm Rehabil. 1995 Nov-Dec;15(6):394-405. doi: 10.1097/00008483-199511000-00001.