From the *Department of Clinical Science, Obstetrics and Gynaecology, UmeĂ¥ University, and Department of Public Health and Clinical Medicine, Epidemiology and Public Health, UmeĂ¥ University, UmeĂ¥, Sweden; and †Department of Obstetrics and Gynaecology, Sunderby Hospital, Sunderby, Sweden.
Acknowledgment date: March 29, 2004. First revision date: April 28, 2004. Second revision date: July 24, 2004. Acceptance date: July 28, 2004.
Supported by grants from the County Council of Västerbotten, the Joint Committee of the Northern Sweden Health Care Region, and the Medical Faculty, UmeĂ¥ University.
The manuscript submitted does not contain information about medical device(s)/drug(s).
Institutional funds were received in support of this work. No benefits in any form have been or will be received from a commercial party related directly or indirectly to the subject of this manuscript.
Address correspondence and reprint requests to Ingrid Mogren, MD, PhD, Epidemiology and Public Health, Department of Public Health and Clinical Medicine, UmeĂ¥ University, S-901 87 UmeĂ¥, Sweden. E-mail: [email protected]
