Additional file 1: of Breaking silence: a survey of barriers to goals of care discussions from the perspective of oncology practitioners PiggottKatrina PatelAmeen WongArthur MartinLeslie PatelAlexandra PatelMatthew LiuYudong Dhesy-ThindSukhbinder YouJohn 2019 Mean scores from physicians and nurses on a Likert scale, rating barriers related to patient and family factors, the role of physicians and nurses from their own perspective, system and external factors, and the role of physicians from nurses’ perspective. (DOCX 19 kb)