Table 1.

Changes of GA in WAS and WFC groups after treatment

Group	Cases (n)	Atrophy improvement			No change	Severe
		0	+	++<-	-
WAS	42	2	22	6	10	2
WFC	34	2	16	8	8	0

0: Have changes but not achieve a state (less than a +); +: Effective; ++<-: Obviously effective.