| Affiliation: | (1) Institute of Clinical Chemistry and Laboratory Diagnostics, Friedrich-Schiller University, Bachstrasse 18, DDR-6900 Jena, German Democratic Republic;(2) Department of Obstetrics and Gynecology, Friedrich-Schiller University, Bachstrasse 18, DDR-6900 Jena, German Democratic Republic;(3) Department of Microbiology, Martin-Luther University, Halle, German Democratic Republic;(4) Central Institute of Microbiology and Experimental Therapy, Academy of Sciences of the GDR, Jena, German Democratic Republic;(5) Department of Pediatrics, Karl-Marx University, Leipzig, German Democratic Republic |
