 Cilmibaadhis kale oo ay dhowaan samaysay jaamacadda caanka ah ee Harvard oo dalka Maraykanka ku taalla, ayaa lagu sheegay in baadhitaanno muddo 8 sano ah la waday ay iftiimiyeen in dadka jimicsiga iyo xarakaadka jidhak sameeya ugu yaraan 150 daqiiqo toddobaad kasta, ay si muuqata hoos ugu dhacdo khatarta looga cabsi qabo in cudurka macaanku ku dhaco. 