 Prof Zarcko Alfirevic wo muri kaminuza ya Liverpool, yari arongoye ubwo bushakashatsi mu bapfasoni bibungenze yavuze ko uwo muti ata co ufasha mu gufasha umuwana gukura, avuga ko : Ibi ata wari avyiteze. Dukeneye kuba maso cane muri iki gihe kugira tumenye ico vyavuyeko. Harakenewe amatohoza akomeye kubera ingaruka zawo ntizari zagaragaye mu bipimo bibiri vya mbere, bikaba ari ibipimo bisa nivyakorewe mu Bwongereza, Australia na Nouvelle Zellande. 