Lymph node ratio predicts recurrence following resections of non-functional pancreatic neuro-endocrine tumours (NF-PNET): a rational approach to postoperative surveillance. (September 2018) - Feretis, M.; Wang, T.; Ghorani, E.; Brandt, C.; Balakrishnan, A.; Harper, S.; Jah, A.; Huguet, E.; Praseedom, R.; Liau, S.-S.