Correction: Comparison between intra-articular ozone and placebo in the treatment of knee osteoarthritis: A randomized, double-blinded, placebo-controlled study
by Carlos César Lopes de Jesus, Fânia Cristina dos Santos, Luciana Maria Oliveira Bueno de Jesus, Iara Monteiro, Maria Sonia Sousa Castro Sant’Ana, Virginia Fernandes Moça Trevisani