Jan Christensen

Sample Collection Guidelines for Trace Elements in Blood and Urine

R. Cornelis, Birger Heinzow, Robert Herber et al. · Journal of Trace Elements in Medicine and Biology · 1996 · 195 citations

Pharmacy, Toxicology, Analytical Chemistry +12

Calculation and application of coverage intervals for biological reference values (Technical Report)

O. M. Poulson, E Holst, Jan Christensen · Pure and Applied Chemistry · 1997 · 133 citations · Full text

Public Health, Biostatistics, Epidemiologic Methods +3

Evaluation of a radioimmunoassay and establishment of a reference interval for salivary cortisol in healthy subjects in Denmark

Åse Marie Hansen, Anne Helene Garde, Jan Christensen et al. · Scandinavian Journal of Clinical and Laboratory Investigation · 2003 · 122 citations

Dentistry, Diagnostic Sciences, Cariology +14

Seasonal and biological variation of blood concentrations of total cholesterol, dehydroepiandrosterone sulfate, hemoglobin A(1c), IgA, prolactin, and free testosterone in healthy women.

Anne Helene Garde, Åse Marie Hansen, Lene Theil Skovgaard et al. · PubMed · 2000 · 116 citations

Medicine, Endocrinology, Physiology +17

Biological monitoring for exposure to volatile organic compounds (VOCs) (IUPAC Recommendations 2000)

R. Heinrich‐Ramm, M. Jakubowski, Birger Heinzow et al. · Pure and Applied Chemistry · 2000 · 88 citations · Full text

Pharmacy, Environmental Sciences, Toxicology +15