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Journal of Clinical Pathology|September 1, 1978
Serological evidence of presence of HBsAg undetectable by conventional radioimmunoassay in anti-HBc positive blood donorsJ N Katchaki, T H Siem, R BrouwerJournal of Medical Virology|January 1, 1979
Hepatitis B core antibody in volunteer blood donors: comparison of radioimmunoassay and indirect immunofluorescenceJ N Katchaki, T H Siem, R BrouwerNederlands Tijdschrift Voor Geneeskunde|April 8, 1989
[2 men with active syphilis infection and HIV-I infection]D de Hoop, J N Katchaki, H J de JongVox Sanguinis|January 1, 1979
The occurrence of antibody markers of hepatitis B virus infection in an HBsAg-negative blood donor populationJ N Katchaki, M van der Waart, T H Siem, et al.Journal of Virological Methods|December 1, 1980
Detection and significance of anti-HBc in the blood bank; preliminary results of a controlled prospective studyJ N Katchaki, T H Siem, R Brouwer, et al.International Journal of STD & AIDS|March 1, 1996
Laboratory-based HIV surveillance with information on exposure: importance of discriminating person-based from test-based resultsY T van Duynhoven, H Houweling, L G Wiessing, et al.Pageof 1