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Amjad, Nasser, Hussain Ali Osman, Najibah Abdul Razak, Junaini Kassian, Jeffri Din, and Nasuruddin bin Abdullah. Clinical Significance of Helicobacter Pylori CagA and IceA Genotype Status. Baishideng Publishing Group Co., Limited, 2010.

Amjad, Nasser, et al. Clinical Significance of Helicobacter Pylori CagA and IceA Genotype Status. Baishideng Publishing Group Co., Limited, 2010.