Circumcision may prevent stds.Logical formLearned from2 sentences. Stds may have energy.Logical formLearned from2 sentences. Concern can be for transmission of stds.Logical formLearned from2 sentences. Whites may have rates of stds.Logical formLearned from2 sentences. A std may be required.Logical formLearned from2 sentences. Pediatricians may feel confident about stds.Logical formLearned from2 sentences. Stds can be painful.Logical formLearned from2 sentences. Stds can be in a US-city.Logical formLearned from2 sentences. Summaries can be constituted-of-or-filled-with (std measurements).Logical formLearned from2 sentences. Stds can be lethal.Logical formLearned from2 sentences. A chance of contracting a std may increase with a number of sexual partners.Logical formLearned from2 sentences. Chlamydia can be stds.Logical formLearned from2 sentences. Protection may pertain-to stds.Logical formLearned from2 sentences. Products may protect against stds.Logical formLearned from2 sentences. Some stds may have treatments.Logical formLearned from2 sentences.