“…Observed mortality was reported in 12 publications 15,16,18,[20][21][22][23][26][27][28]30,31 and ranged from 0.4% in one study for all consecutive hospital deaths within 10 years to 7.8% in another study for all under-five child deaths within 12 months (median, 2.9%). Six publications 15,18,19,27,29,31 reported a decrease in mortality throughout the study period, whereas 1 study 25 reported no change in mortality rates. Eleven publications 16,17,[20][21][22][23][24]26,28,30,32 did not report mortality trends.…”