28 J. D. Sobel, “Is There a Protective Role for Vaginal Flora?” Current Infectious Disease Reports 1 (1999), 379–383; Marie Pirotta et al., “Effect of Lactobacillus in Preventing Post-antibiotic Vulvovaginal Candidiasis: A Randomised Controlled Trial”, British Medical Journal 329 (2004), 548–551; T. Kontiokari et al., “Randomized Trial of Cranberry-Lingonberry Juice and Lactobacillus GG Drink for the Prevention of Urinary Tract Infections in Women”, British Medical Journal 322 (2001), 1571–1575.

29 Gregor Reid, “In Vitro Testing of Lactobacillus acidophilus NCFM as a Possible Probiotic for the Urogenital Tract”, International Dairy Journal 10 (2000), 415–419.

30 R. C. Chan, A. W. Bruce, G. Reid, “Adherence of Cervical, Vaginal and Distal Urethral Normal Microbial Flora to Human Uroepithelial Cells and the Inhibition of Adherence of Gram-negative Uropathogens by Competitive Exclusion”, Journal of Urology 131 (1984), 596–601; Gregor Reid, Andrew Bruce, “Selection of Lactobacillus Strains for Urogenital Probiotic Applications”, Journal of Infectious Diseases 183 (2001), S77 – S80; Gillian Gardiner et al., “Persistence of Lactobacillus fermentum RC-14 and Lactobacillus rhamnosus GR-1 but not L. rhamnosus GG in the Human Vagina as Demonstrated by Randomly Amplified Polymorphic DNA”, Clinical and Diagnostic Laboratory Immunology 9 (2002), 92–96.

31 Gregor Reid et al., “Probiotic Lactobacillus Dose Required to Restore and Maintain a Normal Vaginal Flora”, FEMS Immunology and Medical Microbiology 32 (2001), 37–41; Gardiner et al., “Persistence of Lactobacillus fermentum RC-14”.