[1] Don Carlo Gnocchi IRCCS & Fdn, Milan, Italy
[2] Montecatone Rehabil Inst SpA, Bologna, Italy
[3] Katholieke Univ Leuven, Univ Hosp Leuven, Leuven, Belgium
[4] Univ Malaya, Dept Rehabil Med, Kuala Lumpur, Malaysia
[5] Luigi Vanvitelli Univ Campania, Dept Mental & Phys Hlth & Prevent Med, Naples, Italy
[6] Sestre Milosrdnice Univ Hosp, Dept Rheumatol Phys Med & Rehabil, Zagreb, Croatia
[7] Cochrane Global Ageing, London, England
[8] Med Univ Plovdiv, Dept Phys & Rehabil Med, Plovdiv, Bulgaria
[9] Univ Otago, Dunedin, New Zealand
[10] Natl Inst Hlth & Welf, Ctr Hlth & Social Econ, Helsinki, Finland
[11] Univ Bielefeld, Sch Publ Hlth, Bielefeld, Germany
[12] Istanbul Univ, Fac Med, Dept Phys Med & Rehabil, Istanbul, Turkey
[13] PNS Shifa Hosp, Dept Rehabil Med, DHA 2, Karachi, Pakistan
[14] Bahria Univ Med & Dent Coll, Karachi, Pakistan
[15] Univ Alberta, Fac Rehabil Med, Edmonton, AB, Canada
[16] Univ Milan, Dept Biomed Surg & Dent Sci, Milan, Italy
[17] Galeazzi Orthoped Inst IRCCS, Milan, Italy