1. Frequency-volume charts: an indispensable part of lower urinary tract assessment;Abrams;Scand J Urol Nephrol,1996
2. American College of Obstetricians and Gynecologists. Pelvic organ prolapse. Technical bulletin no. 214. The College, Washington, DC, 1995.
3. Urinary incontinence in women. ACOG Practice Bulletin No. 63;Obstet Gynecol,2005
4. Scientific Committee of the First International Consultation on Incontinence;Lancet,2000
5. Urological abnormalities in young women with severe constipation;Bannister;Gut,1988