Ennis RD et al. J Clin Oncol 2018; 36(12): 1192-1198. doi:10.1200/JCO.2017.75.9134 Please follow the link below to view this article in full on a third party website. Note that a subscription or payment may be required. http://ascopubs.org/doi/abs/10.1200/JCO.2017.75.9134