title: Erratum to: Effectiveness of intra-articular injections of sodium hyaluronate-chondroitin sulfate in knee osteoarthritis: a multicenter prospective study.
authors.affiliation: Department of Orthopedic Trauma, SS Annunziata Hospital, Savigliano, CN, Italy. rivgio@libero.it.|, Via Servais 200 A 16, Turin, Italy. rivgio@libero.it.
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Rivera
authors.affiliation: Sant'Anna Clinic, Casale Monferrato, AL, Italy.|Eporediese Hospital, Ivrea, TO, Italy.
authors.forename: Luca
authors.initials: L
authors.lastname: Bertignone
authors.affiliation: La Vialarda Clinic, Biella, Italy.
authors.forename: Gianclaudio
authors.initials: G
authors.lastname: Grandi
authors.affiliation: La Vialarda Clinic, Biella, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Camisassa
authors.affiliation: Sestri Ponente Hospital, Genova, Italy.
authors.forename: Guido
authors.initials: G
authors.lastname: Comaschi
authors.affiliation: Department of Orthopedics and Traumatology, IRCCS A.O.U. San Martino-IST, Genova, Italy.
authors.forename: Roberto
authors.initials: R
authors.lastname: Trentini
authors.affiliation: Department of Orthopedics and Traumatology, AO CTO Hospital, Turin, Italy.
authors.forename: Marco
authors.initials: M
authors.lastname: Zanone
authors.affiliation: Department of Orthopedics and Traumatology, AO CTO Hospital, Turin, Italy.
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Teppex
authors.affiliation: Department of Orthopedics and Traumatology, AO CTO Hospital, Turin, Italy.
authors.forename: Gabriele
authors.initials: G
authors.lastname: Vasario
authors.affiliation: Santa Rita Clinic, Vercelli, Italy.
authors.forename: Giorgio
authors.initials: G
authors.lastname: Fortina