“…This country classification is based on the gross national income per capita [387]. [51,92,136], Cameroon [96,127], Egypt [114], Ghana [27,29], India [30,34,[46][47][48]59,60,73,74,78,82,88,94,102,107,108,110,115,116,131,133], Indonesia [33,121], Nigeria [28,137,139], Pakistan [72,76,111] [41,58], Austria [118], Canada [39,40,106,123,145], Croatia [52,80,117], Denmark [53,...…”