1. Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD 21205 and Department of Obstetrics and Gynecology, National Taiwan University Hospital, National Taiwan University, Taipei 106, Taiwan
2. Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD 21205
3. Department of Obstetrics and Gynecology, National Cheng Kung University Hospital, National Cheng Kung University, Tainan, Taiwan
4. Department of Pathology, School of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
5. Gene Therapy and Vaccines, Chiron Corporation, Emeryville, CA 94608. 6Department of Obstetrics and Gynecology, Johns Hopkins Medical Institutions, Baltimore, MD 21205. 7Department of Molecular Microbiology, Johns Hopkins Medical Institutions, Baltimore, MD 21205
6. Department of Pathology, Johns Hopkins Medical Institutions, Baltimore, MD 21205; Department of Obstetrics and Gynecology, Johns Hopkins Medical Institutions, Baltimore, MD 21205; Department of Molecular Microbiology, Johns Hopkins Medical Institutions, Baltimore, MD 21205 and Department of Immunology and Oncology, Johns Hopkins Medical Institutions, Baltimore, MD 21205