Efficace, Fabio; Fayers, Peter; Pusic, Andrea; Cemal, Yeliz; Yanagawa, Jane; Jacobs, Marc; la Sala, Andrea; Cafaro, Valentina; Whale, Katie; Rees, Jonathan; Blazeby, Jane; for the European Organization for Research and Treatment of Cancer Quality‐of‐Life Group (Patient‐Reported Outcome Measuremen...