How to predict global trends in HCC mortality if neglecting more than half the world's cases?

How to predict global trends in HCC mortality if neglecting more than half the world's cases?

Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hepatology - Volume 67, Issue 4, October 2017, Pages 887-888

Li-Yang Sun, Han Zhang, Zhen-Li Li, Chao Li, Ming-Da Wang, Tian Yang,