A medical research can be on (birth defects).Logical formLearned from30 sentences. (Risk factors) may be exposed to birth.Logical formLearned from30 sentences. Results can be in (birth defects).Logical formLearned from30 sentences. A stance can be on (birth control).Logical formLearned from30 sentences. Sextuplets may undergo a birth.Logical formLearned from30 sentences. A time can be constituted-of-or-filled-with birth.Logical formLearned from30 sentences. Preparation can be for birth.Logical formLearned from30 sentences. Daughters may undergo births.Logical formLearned from30 sentences. A mystery may pertain-to a birth.Logical formLearned from30 sentences. A week can be after birth.Logical formLearned from30 sentences. A drop can be in births.Logical formLearned from30 sentences. A (birth rate) may increase.Logical formLearned from30 sentences. Women can be on (birth control pills).Logical formLearned from30 sentences. (Birth control) may work.Logical formLearned from30 sentences. (Birth rates) can be in the world.Logical formLearned from30 sentences.