Cardiopulmonary exercise test with bicycle stress echocardiography for predicting adverse cardiac events in patients with stage A or B heart failure by Houng-Beom Ahn, Jiesuck Park, Hye Jung Choi, Hong-Mi Choi, In-Chang Hwang, Yeonyee E. Yoon, Goo-Yeong Cho

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Effect of Calcium Channel Blockers on Antiplatelet Activity of Clopidogrel in Patients Undergoing Percutaneous Coronary Intervention: Insights from the PTRG-DES Consortium by HoungBeom Ahn MD, Hyun-Wook Chu MD, Ae-Young Her MD, PhD, Young-Hoon Jeong MD, PhD, Byeong-Keuk Kim MD, PhD, Hyung Joon Joo MD, PhD, Kiyuk Chang MD, PhD, Yongwhi Park MD, PhD, Sung Gyun Ahn MD, PhD, Sang Yeup Lee MD, PhD, Jung Rae Cho MD, PhD, Hyo-Soo Kim MD, PhD, Moo Hyun Kim MD, PhD, Do-Sun Lim MD, PhD, Eun-Seok Shin MD, PhD, Jung-Won Suh MD, PhD

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