00343nas a2200133   4500000000100000008004100001260002200042100001400064700001600078700001500094700001400109700001300123245007300136       2007                            d  aVancouver, Canada1 aMacedo L.1 aHerbert Rob1 aMcAuley J.1 aKamper S.1 aMaher C.00aDoes it matter which placebo control to use in physiotherapy trials?