Abstract

References
1.
Fernow L.C.
,
Mackie C.
,
McColl I.
, &
Rendall M.
(1978 ) Medical Care 16 , 476
2.
Fernow L.C.
,
McColl I.
,
Mackie C.
, &
Rendall M.
(1977 ) Medical Education 11 , 341 –346
3.
McColl I.
,
Fernow L.C.
,
Mackie C.
, &
Rendall M.
(1976 ) Lancet i , 1341 –1344
4.
Simpson J.E.P.
(1977 ) Lancet i , 531
