TY  - SER
TI  - British Medical Journal : Vol. 303 [6806 - 6817] October - December
SN  - 09598138
U1  - 616 
PY  - 1991///
CY  - London
PB  - BMJ
KW  - MEDICAL SCIENCES
KW  - Medicine
N1  - with index
UR  - https://www.bmj.com/archive/print/1991
ER  -