Efficacy of conventional treatment with composite resin and atraumatic restorative treatment in posterior primary teeth: study protocol for a randomised controlled trial - Ladewig, Nathalia de Miranda; Sahiara, Cíntia Saori; Yoshioka, Laysa; Olegário, Isabel Cristina; Floriano, Isabela; Tedesco, Tamara Kerber; Mendes, Fausto Medeiros; Braga, Mariana Minatel; Raggio, Daniela Prócida (BMJ Open, 2017)