Hill, Anne-Marie, Ross-Adjie, Gail, McPhail, Steven M., Monterosso, Leanne, Bulsara, Max, Etherton-Beer, Christopher, Powell, Sarah-Jayne,  & Hardisty, Gerard   (2016)    Incidence, risk factors and the healthcare cost of falls postdischarge after elective total hip and total knee replacement surgery: Protocol for a prospective observational cohort study.  BMJ Open, 6(7), Article number-e011139.