1. Departments of Obstetrics/Gynaecology, Physiology and Medicine, University of Toronto, Toronto, Ontario, Canada
2. Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada
3. Departments of Microbiology, Immunology and Surgery, University of Western Ontario, Siebens Drake Research Institute, London, Ontario, Canada
4. Canadian Research and Development Centre for Probiotics, Lawson Health Research Institute, London, Ontario, Canada
5. Faculty of Health Sciences, Suite 11022, Blusson Hall, Simon Fraser University, Vancouver, BC, Canada