Heparin Anticoagulation Responsiveness in a Coronary Care Unit: A Prospective Observational Study. - Alsayegh, Faisal; Al-Rasheed, Mona; Al-Muhaini, Ali; Al-Humoud, Ekhlas; Al-Ostaz, Mona; Mousa, Shaker A. (Cardiovascular Therapeutics, 2009)