00399nas a2200145   4500000000100000008004100001100001200042700001100054700001700065700001300082700002100095245012100116300000900237490000700246       2009                            d1 aHall A.1 aLam P.1 aLatimer Jane1 aMaher C.1 aFerreira Manuela00aA randomized controlled trial of tai chi for long-term low back pain (TAI CHI): study rationale, design, and methods  a55. 0 v10