Fujiwara SeikoNishiura HiroshiShirasaka TakumaImamura Akifumi2025-09-172025-1210.1016/j.idm.2025.06.001https://pubs.cidrz.org/handle/123456789/11605Estimating undiagnosed HIV infections by age group in Japan: an extended age-dependent back-calculationhttps://doi.org/10.1016/j.idm.2025.06.001