RT Journal Article SR Electronic T1 Early Diagnosis JF Postgraduate Medical Journal JO Postgrad Med J FD The Fellowship of Postgraduate Medicine SP 347 OP 347 DO 10.1136/pgmj.36.415.347-a VO 36 IS 415 YR 1960 UL http://pmj.bmj.com/content/36/415/347.2.abstract AB