00569nas a2200193 4500000000100000008004100001100001300042700001100055700001100066700001200077700001600089700001500105700001300120700001200133700001400145245019500159300001400354490000700368 2019 d1 aHunter K1 aHall A1 aKeay L1 aBrown J1 aElkington J1 aCharlton J1 aKoppel S1 aHayen A1 aBilston L00aCan child restraint product information developed using consumer testing sustain correct use 6 months after child restraint purchase? Study protocol for a cluster randomised controlled trial a175 - 1790 v25