 Ubushakashatsi bushya bwo ku rwego rwisi bwasohotse mu kinyamakuru cyandika ku nkuru zubushakashatsi mu buvuzi cya The Lancet, bwashimangiye ubwa bubanjirije bwagaragaje ko ingano iyo ari yo yose yikinyobwa gisembuye atari nziza ku buzima. 