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family planningOnly the calendar method of Ogino-Knauss is totally free of side-effects.
It does, however, conceal the biggest safety risk. Safety is substantially
improved by modern methods of measurement, supported by computer, whereby
the body temperature
(Cyclotest 2 Plus or
LadyComp / BabyComp),
hormone status in the urine (Persona
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http://www.dr-hagen.de/fwa/en/playful/nfp/, Version: 17. June 2003, jk
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