Members of the intergroup recently published an important guideline for delineation of the clinical target volumes (CTV) for nasopharyngeal carcinoma. The article appears in Radiother Oncol. 2017 Nov 15 (DOI: 10.1016/j.radonc.2017.10.032).
The publisher, Elsevier, has graciously made the full article available at:
https://www.sciencedirect.com/science/article/pii/S0167814017326865