<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cokkinos, D.V.</style></author><author><style face="normal" font="default" size="100%">Voridis, EM</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">CONSTANCY OF PRESSURE RATE PRODUCT IN ATRIAL PACING-INDUCED ANGINA-PECTORIS</style></title><secondary-title><style face="normal" font="default" size="100%">CIRCULATION</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">1973</style></year></dates><number><style face="normal" font="default" size="100%">4</style></number><publisher><style face="normal" font="default" size="100%">WILLIAMS &amp; WILKINS 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436</style></publisher><volume><style face="normal" font="default" size="100%">48</style></volume><pages><style face="normal" font="default" size="100%">155–155</style></pages><language><style face="normal" font="default" size="100%">eng</style></language></record></records></xml>