The classic histologic features of alcoholic hepatitis include inflammation and necrosis, which are most prominent in the centrilobular region of the hepatic acinus ( Figure 2 ). Hepatocytes are classically ballooned, which causes compression of the sinusoid and reversible portal hypertension. The inflammatory cell infiltrate, located primarily in the sinusoids and close to necrotic hepatocytes, consists of polymorphonuclear cells and mononuclear cells. In addition to inflammation and necrosis, many patients with alcoholic hepatitis have fatty infiltration and Mallory bodies, which are intracellular perinuclear aggregations of intermediate filaments that are eosinophilic on hematoxylin-eosin staining. Neither fatty infiltration nor Mallory bodies are specific for alcoholic hepatitis or necessary for the diagnosis. 16
The search methods should be described in sufficient detail so the search can be reproduced based on the information provided in the manuscript. A summary of the methods of the literature search including this information should be included in the main article; details can be included in an online-only supplement. A PRISMA-style flow diagram showing this information should also be included as an online-only supplement. In addition, a completed PRISMA checklist should be submitted for the items completed that apply to systematic reviews (the checklist items that apply to meta-analyses do not need to be completed for systematic reviews without meta-analysis). The checklist will be used during review but will not be published.
When the cause of a fall is not determined or a patient remains at high risk for falls, referral to a falls prevention program may be warranted. Recent studies have shown that such programs can reduce the rate of falls in the elderly. In one study, 34 the interactive group had a relative risk of falling of compared with the control group. Interventions included the modification of environmental hazards and the evaluation and treatment of blood pressure, vision problems and mental status changes, including depression. Interventions that may be successful in reducing falls are listed in Table 7 . 22