TY  - SER
TI  - British Medical Journal : Vol. 342 [7787 - 7799] January - March
SN  - 09598138
U1  - 616 
PY  - 2011///
CY  - London
PB  - BMJ
KW  - MEDICAL SCIENCES
KW  - Medicine
UR  - https://www.bmj.com/archive/print/2004
ER  -