RT Journal Article SR Electronic T1 On Stress Disease and Evolution JF Postgraduate Medical Journal JO Postgrad Med J FD The Fellowship of Postgraduate Medicine SP 883 OP 884 DO 10.1136/pgmj.66.780.883-b VO 66 IS 780 A1 Nixon, P.G.F. YR 1990 UL http://pmj.bmj.com/content/66/780/883.3.abstract AB