Table S1. The grading system for esophageal varices (Japanese Research Society for Portal Hypertension, Chinese Society of Digestive Endoscopy) and endoscopic results of our study.

Grade	Endoscopic criterion		No. of patients*
	Form (F)	Red color sign (RC)
Mild	F1	RC−	18
Moderate	F1	RC+	12
	F2	RC−
Severe	F2	RC+	106
	F3	RC+ or RC−

*, data is the number of patients of our result according to the grading system. F, form; RC, red color sign.