Lee SK, Lee SW, Park JY, Kwon BS, Kim SY, Hyun JJ, Kim JH, Jung SW, Koo JS, Yim HJ, Choi JH. Effectiveness and safety of repeated quadruple therapy in Helicobacter pylori infection after failure of second-line quadruple therapy: repeated quadruple therapy as a third-line therapy. Helicobacter. 2011 Oct;16(5):410–4. doi: 10.1111/j.1523-5378.2011.00870.x. PMID: 21923688.
Effectiveness and safety of repeated quadruple therapy in Helicobacter pylori infection after failure of second-line quadruple therapy: repeated quadruple therapy as a third-line therapy