Critics of the Lancet study have pointed out other difficulties in obtaining accurate statistics in a war zone. The authors of the study readily acknowledge this point and note the problems in the paper; for example they state that "there can be a dramatic clustering of deaths in wars where many die from bombings". They also said that the data their projections were based on were of "limited precision" because the quality of the information depended on the accuracy of the household interviews used for the study.[16][17]