“…In addition, 34.69% of the studies were conducted in the U.S. [22,24,25,31,33,34,[36][37][38]41,44,52,53,55,57,58,64], 14.2% in Australia [20,27,28,50,51,65,68], 28.5% in Asia [26,29,32,35,39,40,42,[46][47][48][49]60,63,66], and 22.4% in Europe [21,23,30,43,45,54,56,59,61,62,67].…”