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. 2020 Jun 19;133(10):1143–1150. doi: 10.1016/j.amjmed.2020.05.018

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© 2020 Elsevier Inc. All rights reserved.

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Recent advancements in stethoscope technology. Recent developments in stethoscope technology have included phonographic visualization, Bluetooth transmission, ambient noise reduction and heart sound amplification, and automated diagnostic support using machine learning, and artificial intelligence algorithms. The integration of computer algorithm support with smartphones has the potential to increase the portability and accessibility of these technologies.14, 15, 16, 17 All images were retrieved with permission from the developers (Stone Three Healthcare, Cape Town, South Africa; Thinklabs, Centennial, Colo; Steth IO, Bothell, Wash; Eko Devices, Berkeley, Calif).