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2. A supportive-educative telephone program: Impact on knowledge and anxiety after coronary artery bypass graft surgery;Beckie;Heart & Lung,1989
3. Patient evaluation by video tape after myocardial infarction: An empirical evaluation;Brochen;Archives of Physical Medicine & Rehabilitation,1977
4. Varying the time of information to alter preoperative anxiety and postoperative recovery in cardiac surgery patients;Christopherson;Heart & Lung,1980