David K. Farkas

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BACKGROUND Earlier studies reported an increased cancer risk among patients with systemic sclerosis. Study size limitations and paucity of population-based study designs may have resulted in imprecise risk estimates. OBJECTIVES To assess cancer risk among patients with systemic sclerosis in a nationwide follow-up study. METHODS Patients with a first(More)
OBJECTIVE The aim of the study was to examine whether exposure to abacavir increases the risk for myocardial infarction (MI). DESIGN, SETTING AND SUBJECTS This was a prospective nationwide cohort study which included all Danish HIV-infected patients on highly active antiretroviral therapy (HAART) from 1995 to 2005 (N = 2952). Data on hospitalization for(More)
OBJECTIVES To investigate the short- and long-term risk of cancer in patients with active tuberculosis (TB). DESIGN Using Danish nationwide databases, we quantified cancer risk in TB patients during 1978-2011 compared with the general population. RESULTS We observed 1747 cancers in 15 024 TB patients (median follow-up 8.5 years), reflecting a(More)
BACKGROUND Proton pump inhibitors (PPIs) may activate the immune system and cause asthma. AIM To investigate the association of prenatal exposure to PPIs and histamine 2-receptor antagonists (H2RAs) with risk of asthma. METHODS In this cohort study, 197,060 singletons born between 1996 and 2008 in northern Denmark were followed until the end of 2009.(More)
Balloon Help, which is becoming standard in the Macintosh world, enables the user to display brief annotations of interface objects by passing the pointer (cursor) over those objects. This investigation explains the operation of Balloon Help, presents the theoretical and empirical rationale for Balloon Help, assesses its value in supporting both exploration(More)
BACKGROUND Pruritus is a frequent complaint in patients with cancer. However, no large study has examined pruritus as a marker of undiagnosed cancer. OBJECTIVES To examine the association between inpatient, outpatient and emergency hospital diagnoses of pruritus and subsequent cancer diagnoses. METHODS In this nationwide Danish cohort study, we used(More)