00853145-n
(2)
|
| metodo Ogino Knauss, metodo del calendario, metodo dell'astinenza periodica, metodo Ogino-Knauss, Ogino-Knauss |
| rhythm method, rhythm, rhythm method of birth control, calendar method of birth control, calendar method |
| |
natural family planning in which ovulation is assumed to occur 14 days before the onset of a period (the fertile period would be assumed to extend from day 10 through day 18 of her cycle) |