Trends and determinants of acute tocolysis implementation in Japan, 2012–2023: An 11-year nationwide retrospective cohort study. - Toba, Mikayo; Oi, Rie; Moriwaki, Mutsuko; Kakehashi, Masayuki; Fudono, Ayako; Fushimi, Kiyohide; Miyasaka, Naoyuki (PLoS ONE, 2026)