Effects of heart-rate feedback on estimated cardiovascular fitness in patients with panic disorder<FNR></FNR> The opinions or assertions contained herein are the private ones of the authors and are not to be construed as official or reflecting the views of the Department of Defense, the United States Air Force, or the Uniformed Services University of the Health Sciences. - Schmidt, Norman B.; Lerew, Darin R.; Santiago, Helen; Trakowski, John H.; Staab, Jeffrey P. (Depression & Anxiety (1091-4269), 2000)