Author response table 1. The tissue sections of spleen were scored as follows.

Lesion	Score	Description
Histiocytic inflammation	0	None
	1	Minimal- filling <25% of marginal zone
	2	Mild- filling 25-50% of marginal zone
	3	Moderate- filling 51-75% of marginal zone
	4	Marked- filling >75% of marginal zone