“…83,84 However, reviews of applied studies using expert elicitation have found heterogeneity in the methodology used and a lack of consideration for any existing guidance on the topic. 74,76,[85][86][87] There are several methods for eliciting expert opinion. [88][89][90][91] Whilst these are generic methods for elicitation, rather than being specific for eliciting information to be used in the extrapolation of survival analyses, they may, nonetheless, prove useful when trying to improve the accuracy of extrapolations and can be included with varying degrees of formality.…”