[1]
B. D. da . Rocha, C. . Zamberlan, H. M. F. . Pivetta, B. Z. . Santos, and B. S. . Antunes, “Upright positions in childbirth and the prevention of perineal lacerations: a systematic review and meta-analysis”, Rev. Esc. Enferm. USP, vol. 54, p. e03610, Sep. 2020, doi: 10.1590/s1980-220x2018027503610 .