RT Journal Article
SR Electronic
T1 Contraception—Natural Family Planning
JF The Journal of the American Board of Family
                Practice
JO J Am Board Fam Med
FD American Board of Family Medicine
SP 277
OP 278
DO 10.3122/jabfm.4.4.277a
VO 4
IS 4
A1 Stanford, Joseph B.
YR 1991
UL http://www.jabfm.org/content/4/4/277.2.abstract
AB