RT Journal Article
SR Electronic
T1 Letter: The retrospective study
JF Canadian Medical Association Journal
JO CMAJ
FD Canadian Medical Association
SP 13b
OP 13
VO 114
IS 1
A1 T. W. Anderson
A1 M. J. Ashley
A1 A. E. Clarke
YR 1976
UL http://www.cmaj.ca/content/114/1/13b.abstract