What's the Deal With COVID Testing Now? Doctors Explain When to Test, How to Get Them and More

A PCR test detects the actual genetic material of the virus and involves a step that amplifies the presence of any material ...
BMJ Open

Aetiologic diagnosis of thoracic granulomatous diseases: a retrospective multicentre study in South-Central China

Objectives To characterise the aetiological spectrum of thoracic granulomatous diseases and identify diagnostic features that facilitate differentiation among causes. Design Retrospective multicentre ...