Table 1.

Primers used for cagA amplification

Primer	Sequence (5′-3′)
CagA-Tfw	GGAACCCTAGTCGGTAATG
CagA-Trv	ATCTTTGAGMTTGTCTATCG
CagA-rvP1	GTCCTGYTTTCTTTTTATTAACYTKAGC
CagA-rvP2	TTTAGCAACTTGAGYRTAAATGGG
CagA-rvP3	ATCAATYGTAGCATAAATGGG

(M=A+C, Y=T+C, K=G+T, and R=G+A)