One of the authors (S.M. (Shinya Matsuzaki)) extracted the data and recorded the following variables: year of study, first author’s name, study location, number of included cases, PAS and uterine rupture definitions, subsequent obstetric outcomes (rates of uterine rupture and PAS), and maternal outcomes (hysterectomy, and maternal death). The review author (S.M. (Satoko Matsuzaki)) double-checked the data.
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