Fig. 1From: Panitumumab use in metastatic colorectal cancer and patterns of RAS testing: results from a Europe-wide physician survey and medical records reviewPhysician disposition for the a) physician survey and b) medical records review studies. aFor Round 1, physicians were randomly selected for inclusion from a broad sampling list not filtered by speciality. A more targeted sampling of physicians filtered by speciality and based on the study eligibility criteria was used in Rounds 2 and 3Back to article page