Sarah Moore , a scientist from the London School of Hygiene and Tropical Medicine , says the results of studies on such repellents ' efficiency are so far are inconclusive , but their use has gained in popularity because of the rationale behind such measures :
Sarah Moore , mä siyintiphika khä Escuela de Higiene ukat Medicina Tropical de Londres ukat siwa uka jark ’ aqirinakax wali askiw sartaski uka markana , ukhamarus uka jark ’ aqirix wali uñt ’ ataxiwa :