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| коллективный иммунитет (Нормативный документ NCCN Guidelines Version 3.2021 Head and Neck Cancers: HPV vaccination in the United States has led to herd protection against oral HPV16, 18, 6, and 11 infections in unvaccinated men таси) | |||
| herd protection: 2 phrases in 1 subject |
| Makarov | 2 |