RT Journal Article
SR Electronic
T1 RESEARCH UNIT
JF The Journal of the Royal College of General Practitioners
JO J R Coll Gen Pract
FD British Journal of General Practice
SP 799
OP 799
VO 23
IS 136
A1 D. L. Crombie
YR 1973
UL http://bjgp.org/content/23/136/799.2.abstract
AB