REMOTE HEART RHYTHM MONITORING BY PHOTOPLETHYSMOGRAPHY-BASED SMARTPHONE TECHNOLOGY AFTER CARDIAC SURGERY: PROSPECTIVE OBSERVATIONAL STUDY ArticleLamberigts M., Van Hoof L., Rega F., Proesmans T., Grieten L., Vandervoort P., Haemers P.JMIR mHealth and uHealth. Том 9. 2021. e26519 с.