British Medical Journal, 1993/09, 307(6904):624. doi: 10.1136/bmj.307.6904.624-b, type of study: ,let,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,

Free full text   (https://www.bmj.com/content/307/6904/624.2)

Keywords:

diagnosis [412]
letter [610]

Abstract:

No abstract available.