[1] La Trobe Univ, Dept Publ Hlth, Ctr Hlth Commun & Participat, Sch Publ Hlth & Human Biosci, Melbourne, Vic, Australia
[2] Fdn IRCCS Ist Neurol C Besta, Cochrane Multiple Sclerosis & Rare Dis Cent Nervo, Unit Neuroepidemiol, Milan, Italy
[3] Deakin Univ, Sch Hlth & Social Dev, Populat Hlth Strateg Res Ctr, Publ Hlth, Melbourne, Vic, Australia
[4] Deakin Univ, Sch Hlth & Social Dev, Populat Hlth Strateg Res Ctr, Publ Hlth Innovat, Melbourne, Vic, Australia
[5] MS Australia, Member Serv, Perth, WA, Australia
[6] IRCSS Mario Negri, Pharmacol Res Inst, Lab Med Res & Consumer Involvement, Dept Publ Hlth, Milan, Italy