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Kim, Na Young, Hyun Sook Oh, Hyung Man Jung, Sung Ho Wee, Jeong Heui Choi, und Kye Heui Lee. "The Effect of Eradication of Helicobacter Pylori Upon the Duodenal Ulcer Recurrence: – A 24 Month Follow-up Study –." Korean J Intern Med 1994.

Kim, Na Young, et al. "The Effect of Eradication of Helicobacter Pylori Upon the Duodenal Ulcer Recurrence: – A 24 Month Follow-up Study –." Korean J Intern Med 1994.