TY  - GEN
TI  - Periodic abstinence: how well do new approaches work?
SN  - 0097-9090
PY  - 1983///1217
KW  - Attitude
KW  - Body Temperature
KW  - Catholicism
KW  - Cervix Mucus
KW  - metabolism
KW  - Evaluation Studies as Topic
KW  - Family Planning Services
KW  - trends
KW  - Female
KW  - Humans
KW  - Menstruation
KW  - Natural Family Planning Methods
KW  - Pregnancy
KW  - Sexual Abstinence
N1  - Publication Type: Comparative Study; Journal Article
ER  -