Nimiösivulla myös: National Public Health Institute, Department of Microbiology, Oulu, Finland & Faculty of Medicine, Department of Medical Microbiology, University of Oulu, Finland and Department of Obstetrics and Gynaecology, University of Helsinki, Finland
Tiivistelmä ja 4 erip. - Nimiösivulla myös: National Public Health Institute, Department of Microbiology, Oulu, Finland & Faculty of Medicine, Department of Medical Microbiology, University of Oulu, Finland and Department of Obstetrics and Gynaecology, University of Helsinki, Finland