Christopher W Hammerle

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In this paper we develop predictions from models of life-long demographic heterogeneity. These predictions are then compared to observations of mortality in large laboratory populations of Drosophila melanogaster. We find that the demographic heterogeneity models either require levels of variation that far exceed what would be considered biologically(More)
Irritable bowel syndrome (IBS) is a highly prevalent gastrointestinal disorder characterized by abdominal pain and discomfort in association with altered bowel habits. It is estimated to affect 10%-15% of the Western population, and has a large impact on quality of life and (in)direct healthcare costs. IBS is a multifactorial disorder involving(More)
BACKGROUND Single-operator cholangioscopy allows direct visualization of the biliary tree and is being used in the diagnosis and treatment of various biliary conditions. To date, there are few data examining complications of single-operator cholangioscopy. METHODS We evaluated all endoscopic retrograde cholangiopancreatography procedures over a two-year(More)
Irritable bowel syndrome (IBS) is a highly prevalent disorder characterized by nonspecific symptoms that can mimic other common medical conditions. A careful history and physical examination may reveal clues that suggest a coexisting or alternative diagnosis, such as small intestinal bacterial overgrowth or celiac disease (CD). Testing for bacterial(More)
Primary liver tumors in children are rare with hepatoblastoma (HB) being the most common malignancy. Clear cell carcinoma, a variant of hepatocellular carcinoma (HCC), is another rare tumor of the liver that tends to affect adults. We describe the diagnosis and management of the only known documented case of a primary clear cell HCC arising twenty-five(More)
Performing ERCP in patients with previous pancreaticoduodenectomy (PD) is technically challenging. Balloon-assisted ERCP has recently been recognized as a useful tool in patients with surgically altered anatomies. However, there are few studies that focus on ERCP in post-PD patients. This study aimed to evaluate the outcome of ERCP in patients in post-PD(More)
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