Kose SH, Grice K, Orsi WD, Ballal M, Coolen MJL Metagenomics of pigmented and cholesterol gallstones: the putative role of bacteria. Sci Rep. 2018 Jul 25;8(1):11218. doi: 10.1038/s41598-018-29571-8. Erratum In: Sci Rep. 2020 Mar 4;10(1):4347.
Law R, Baron TH ERCP. Gastrointest Endosc. 2013 Sep;78(3):428-33. doi: 10.1016/j.gie.2013.06.018. No abstract available.
Li QY, Chen KJ, Jin J, Zheng SS Guide wire-assisted technique to access the bile duct with biopsy forceps for repositioning and removal of metal stents. Endoscopy. 2013;45 Suppl 2 UCTN:E273-4. doi: 10.1055/s-0033-1344591. Epub 2013 Sep 5. No abstract available.
Li QY, Pan L, Ling Q, He JD, Zhang LX, Zheng SS Single-operator wire-guided cannulation technique enables easier cannulation of endoscopic retrograde cholangiopancreatography. Dig Dis Sci. 2012 Dec;57(12):3293-8. doi: 10.1007/s10620-012-2274-5. Epub 2012 Jun 27.
Swidsinski A, Ludwig W, Pahlig H, Priem F Molecular genetic evidence of bacterial colonization of cholesterol gallstones. Gastroenterology. 1995 Mar;108(3):860-4. doi: 10.1016/0016-5085(95)90461-1.
Ye F, Shen H, Li Z, Meng F, Li L, Yang J, Chen Y, Bo X, Zhang X, Ni M Influence of the Biliary System on Biliary Bacteria Revealed by Bacterial Communities of the Human Biliary and Upper Digestive Tracts. PLoS One. 2016 Mar 1;11(3):e0150519. doi: 10.1371/journal.pone.0150519. eCollection 2016.
Yu LX, Schwabe RF The gut microbiome and liver cancer: mechanisms and clinical translation. Nat Rev Gastroenterol Hepatol. 2017 Sep;14(9):527-539. doi: 10.1038/nrgastro.2017.72. Epub 2017 Jul 5.
Explore the Effects and Mechanisms of ERCP and EST on Biliary Microecology
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
