Author response table 2. The tissue sections of liver were scored as follows.

Severity	Proportion of liver affected	Score	Quantifiable finding
None	None	0	None
Marginal or minimal	Very small amount	1	1-2 foci
Slight or few	Small amount	2	3-6 foci
Moderate or several	Medium amount	3	7–12 foci
Marked or many	Large amount	4	>12 foci, coalescing