. "0"^^ . . . "ovulation method of family planning"@en-us . . "ovulation method"@en-us . "100852825"^^ . . "0.125"^^ . "ovulation method of family planning"^^ . "natural family planning in which the fertile period is inferred from changes in the character and quantity of cervical mucus; ovulation is marked by an increase in mucus that becomes sticky and then clearer and slippery"@en-us . . . . "100801826"@en-us . . . "00852825-n"^^ .