TY  - GEN
AU  - Frank-Herrmann,P
AU  - Freundl,G
AU  - Gnoth,C
AU  - Godehardt,E
AU  - Kunert,J
AU  - Baur,S
AU  - Sottong,U
TI  - Natural family planning with and without barrier method use in the fertile phase: efficacy in relation to sexual behavior: a German prospective long-term study
SN  - 0267-4874
PY  - 1997///1015
KW  - Adult
KW  - Contraceptive Devices
KW  - Family Planning Services
KW  - methods
KW  - Female
KW  - Fertility
KW  - Germany
KW  - Humans
KW  - Male
KW  - Natural Family Planning Methods
KW  - Ovulation Detection
KW  - Pregnancy
KW  - Prospective Studies
KW  - Sexual Behavior
KW  - Time Factors
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1023/a:1006551921219
ER  -