“…In this line of studies, from 2009, seventy-nine other studies were also published [15-17,19-24-26,27,29-32,34-45,47-77,79,80,83,84,88-94,96,98-102,104-107], and fourteen studies were published from 1994 to 2009 [18,25,28,33,46,78,81,82,[85][86][87]95,97,103]. Fortyone of the above mentioned studies were conducted in USA [18,19,21,23,24,30,32,34,37,38,[42][43][44][45][46][47]49,50,[53][54][55][56]60,61,63,[74][75][76][77][78][79][83][84][85][86][87][88]…”