Use of drugs for gastrointestinal disorders:: evidence from national survey on access, use and promotion of rational use of medicines - Pereira, Lucas Borges; Gonçalves, Ana Maria Rosa Freato; Fernandes, Camila Stefani Estancial; Fontanella, Andréia Turmina; Francisco, Priscila Maria Stolses Bergamo; Mengue, Sotero Serrate; Borges, Rogério Boff; Pizzol, Tatiane da Silva Dal; Costa, Karen Sarmento (Einstein (São Paulo), 2020)