Diagnostic Performance of a Smartphone‐Based Photoplethysmographic Application for Atrial Fibrillation Screening in a Primary Care Setting oleh Pak‐Hei Chan, Chun‐Ka Wong, Yukkee C. Poh, Louise Pun, Wangie Wan‐Chiu Leung, Yu‐Fai Wong, Michelle Man‐Ying Wong, Ming‐Zher Poh, Daniel Wai‐Sing Chu, Chung‐Wah Siu