“…Thirteen studies were from North America, 16,17,23,24,26,[28][29][30][34][35][36][37]39 eight from Europe, 9,10,15,21,22,31,32,38 six from Australia, 18,20,25,27,40,41 and one from Asia. 33 Nineteen studies had a before-and-after design and four 22,32,33,35 compared non-randomised assessment options within the same period.…”