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. 1999 Apr 15;5(2):156–159. doi: 10.3748/wjg.v5.i2.156

Table 2.

Maximal acid output before and after operation (^-x ± s, mmol/L)

Operation mode	n	Preoperation	Postoperation
PPVPG	64	66.23 ± 13.76	15.68 ± 5.53^b
B I	24	67.21 ± 20.23	15.96 ± 10.32^b
B II	20	66.18 ± 7.19	16.15 ± 11.04^b

^b

P < 0.01, vs preoperation.