Low back pain prevalence in Sao Paulo, Brazil: A cross-sectional study Gabrielle Z. Gonzalez; Tatiane da Silva; Marina A. Avanzi; Gabriel T. Macedo; Shirley S. Alves; Luciana S. Indini; Luzinete M.P. Egea; Amélia P. Marques; Carlos M. Pastre; Lucíola da C.M. Costa; Leonardo O.P. Costa;

Transcutaneous electrical nerve stimulation and heat to reduce pain in a chronic low back pain population: a randomized controlled clinical trial Lynn Leemans; Ömer Elma; Jo Nijs; Timothy H. Wideman; Carolie Siffain; Hester den Bandt; Sven Van Laere; David Beckwée;

The methodological quality of clinical trials of physical therapy for low back pain varies between countries with different income levels. A meta-epidemiological study Carlos Maximiliano Sánchez Medina; Claudia Gutiérrez Camacho; Anne M. Moseley; Xochiquetzalli Tejeda Castellanos; Qiuzhe Chen; Edgar Denova-Gutiérrez; Aidan G Cashin; Viridiana Valderrama Godínez; Akari Fuentes Gómez; Ana Elisabeth Olivares Hernández; Giovanni E. Ferreira;