Publications by authors named "Joachim Toerum Johansen"

Technical advances in diagnostic techniques have permitted the possibility of multi-disease-based approaches for diagnosis and treatment monitoring of several infectious diseases, including tuberculosis (TB), human immunodeficiency virus (HIV), viral hepatitis and sexually transmitted infections (STI). However, in many countries, diagnosis and monitoring, as well as disease response programs, still operate as vertical systems, potentially causing delay in diagnosis and burden to patients and preventing the optimal use of available resources. With countries facing both human and financial resource constraints, during the COVID-19 pandemic even more than before, it is important that available resources are used as efficiently as possible, potential synergies are leveraged to maximise benefit for patients, continued provision of essential health services is ensured.

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In a large nationwide cohort study including 420,095 persons whose first mobile phone subscription was between 1982 and 1995, who were followed through 2003 for hospital contacts for a diagnosis of a central nervous system disease, we observed 10-20% more hospital contacts than expected for migraine and vertigo and 30-40% less hospital contacts than expected for dementia (Alzheimer's disease, vascular and other dementia), Parkinson's disease and epilepsy among men. No associations were seen for amyotrophic lateral sclerosis, multiple sclerosis or epilepsy in women.

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The aim of this study was to investigate a possible link between cellular telephone use and risks for various diseases of the central nervous system (CNS). We conducted a large nationwide cohort study of 420 095 persons whose first cellular telephone subscription was between 1982 and 1995, who were followed through 2003 for hospital contacts for a diagnosis of a CNS disorder. Standardized hospitalization ratios (SHRs) were derived by dividing the number of hospital contacts in the cohort by the number expected in the Danish population.

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Background: The widespread use of cellular telephones has heightened concerns about possible adverse health effects. The objective of this study was to investigate cancer risk among Danish cellular telephone users who were followed for up to 21 years.

Methods: This study is an extended follow-up of a large nationwide cohort of 420,095 persons whose first cellular telephone subscription was between 1982 and 1995 and who were followed through 2002 for cancer incidence.

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Epidemiologic studies on adverse health effects of cellular telephone use have assessed exposure either by self-reported use based on questionnaire data or by using data on subscriptions for a cellular telephone provided by network operators. With the latter approach, subjects are misclassified when they regularly use a cellular telephone subscribed in someone else's or in a company name or when they subscribe for a cellular telephone which they use only occasionally. Self-reported use is hampered by recall difficulties and possible differential participation by exposure.

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