Bismuth, esomeprazole, metronidazole, and minocycline or tetracycline as a first-line regimen for Helicobacter pylori eradication: A randomized controlled trial oleh Baojun Suo, Xueli Tian, Hua Zhang, Haoping Lu, Cailing Li, Yuxin Zhang, Xinlu Ren, Xingyu Yao, Liya Zhou, Zhiqiang Song, Yuanyuan Ji