Intravaginal electrical stimulation increases voluntarily pelvic floor muscle contractions in women who are unable to voluntarily contract their pelvic floor muscles: a randomised trial - Antônio, Flávia Ignácio; Bo, Kari; Pena, Caroline Caetano; Bueno, Sabrina M.; Vasconcelos, Elaine Cristine Lemes Mateus; Fernandes, Ana Carolina Nociti Lopes; Ferreira, Cristine Homsi Jorge (Journal of Physiotherapy, 2022)