Top global health officials have said the number of women and children killed in Gaza has not been revised down after new details published by the United Nations last week sparked outcry and confusion. The U.N. Office for the Coordination of Humanitarian Affairs (OCHA) told NBC News it had changed its regular updates on the death toll in Gaza to reflect breakdown by gender and age of the number of people who have been identified among those killed, rather than providing a breakdown of the total number of people killed. As a result, the number of women and children listed...