RT Journal Article
SR Electronic
T1 CAUSAL RELATIONSHIPS IN MEDICINE
JF The Journal of the Royal College of General Practitioners
JO J R Coll Gen Pract
FD British Journal of General Practice
SP 177
OP 177
VO 39
IS 321
A1 A.D. Clayden
YR 1989
UL http://bjgp.org/content/39/321/177.1.abstract
AB