00385nas a2200133   4500000000100000008004100001260002200042100001400064700001600078700001300094700001500107700001300122245011600135       2007                            d  aVancouver, Canada1 aMacedo L.1 aHerbert Rob1 aClare H.1 aMcAuley J.1 aMaher C.00aTrials and tribulations: challenges encountered conducting a randomised controlled trial on the McKenzie method