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Schumacher, A., A. B. Lerkerød, I. Seljeflot, L. Sommervoll, I. Holme, J. E. Otterstad, ja H. Arnesen. "Chlamydia Pneumoniae Serology: Importance of Methodology in Patients With Coronary Heart Disease and Healthy Individuals." J Clin Microbiol 2001.

Schumacher, A., et al. "Chlamydia Pneumoniae Serology: Importance of Methodology in Patients With Coronary Heart Disease and Healthy Individuals." J Clin Microbiol 2001.