A comprehensive study of Medicare beneficiaries aged 65 and older reveals that emergency room diagnostic errors occur in approximately 3.2% of serious medical emergencies, affecting roughly 1 in ...

Joel Achenbach reports on science and health for the National desk. He has been a staff writer for The Post since 1990. Email: joel.achenbach@washpost.com ...

Information you can trust. Reuters, the news and media division of Thomson Reuters, is the world’s largest multimedia news provider, reaching billions of people worldwide every day.