TY  - SER
TI  - British Medical Journal : Vol. 320 [7239 - 7251] April - June
SN  - 09598138
U1  - 616 
PY  - 2000///
CY  - London
PB  - BMJ
KW  - MEDICAL SCIENCES
KW  - Medicine
UR  - https://www.bmj.com/archive/print/2000
ER  -