TY - SER TI - British Medical Journal : Vol. 301 [6754 - 6766] October - December SN - 09598138 U1 - 616 PY - 1990/// CY - London PB - BMJ KW - MEDICAL SCIENCES KW - Medicine N1 - Missing No. 6756 UR - https://www.bmj.com/archive/print/1990 ER -