Acknowledgement
The authors would like to acknowledge the KorHF III investigators; Seoul National University Hospital (Hyun-Jai Cho), Severance Cardiovascular Hospital (Seok-Min Kang), Samsung Medical Center (Jin Oh Choi), Kangnam Sacred Heart Hospital (Seonghoon Choi), Gangnam Severance Hospital (Eui-Young Choi), Kangdong Sacred Heart Hospital (Il Suk Sohn), Kangdong Sacred Heart Hospital (Dae-Gyun Park), Kangbuk Samsung Hospital (Ki-Chul Sung), Konkuk University Medical Center (Sung Hea Kim), Kyung Hee University Hospital (Hyemoon Chung), Korea University Guro Hospital (Eung Ju Kim), Korea University Anam Hospital (Seong-Mi Park), Boramae Medical Center (Myung-A Kim), Seoul St. Mary Hospital (Jong-Chan Youn), Asan Medical Center (Junho Hyun), Ewha Womans University Medical Center (Kyung-Jin Kim), Seoul, Seoul National University Bundang Hospital (Dong-Ju Choi), Seongnam, Dongtan Sacred Heart Hospital (Seong Woo Han), Hwaseong, Bucheon Sejong Hospital (Seok-Geon Hong), Bucheon St. Mary's Hospital (Sang-Hyun Ihm), Bucheon SoonChunHyang University Hospital (Min Gyu Kong), Bucheon, Ilsan Paik Hospital (Sung Woo Cho), National Cancer Center (Jae-Kyung Kim), Goyang, Pyeongchon Sacred Heart Hospital (Sang-Ho Jo), Anyang, Ajou University Hospital (Joon-Han Shin), Uijeongbu St. Mary's Hospital (Hyo-Suk Ahn), Uijeongbu, Wonju Severance Cardiovascular Hospital (Byung-Su Yoo), Wonju, Kangwon National University Hospital (Dong Ryeol Ryu), Chuncheon Sacred Heart Hospital (Kyeong-Sun Hong), Chuncheon, Gil Medical Center (Mi-Seung Shin), Incheon Sejong Hospital (Kyung-Hee Kim), Incheon St. Mary's Hospital (Mi-Jeong Kim), Inha University Hospital (Sung-Hee Shin), Incheon, Kyungpook National University (Dong Heon Yang), Dongsan Hospital (Hyung-Seop Kim), Yeungnam University Medical Center (Jong-Ho Nam), Deagu, Ulsan University Hospital (Shin-Jae Kim), Kosin University Gospel Hospital (Bong-Joon Kim), Pusan University Hospital (Jung Hyun Choi), Inje University Busan Paik Hospital (Jeong-Sook Seo), Busan, Pusan National University Yangsan Hospital (Yong-Hyun Park), Chungbuk National University Hospital (Myeong-Chan Cho), Cheongju, Chungnam National University Hospital (Jin-Ok Jeong), Daejeon, Gyeongsang National University Hospital (Seok Jae Hwang), Jinju, Chonnam National University Hospital (Kye Hun Kim), Gwangju, Jeonbuk National University Hospital (Sun Hwa Lee), Jeonju, Jeju University Hospital (Seung Jae Joo).
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