Dr. Mark Walker is the founder of The OMNI Research Group, and a perinatologist at The Ottawa Hospital and an Assistant Professor with the University of Ottawa. He currently holds a Career Scientist Award (five years) from the Ministry of Health of Ontario. Dr. Walker's research training was primarily at the University of Toronto in clinical epidemiology. He is now principal investigator and co-investigator in numerous peer reviewed grants from institutions such as Canadian Institute of Health Research, The Heart and Stroke Foundation, The Physicians Services Incorporated and Canada Foundation for Innovation. The majority of Dr. Walker's research has involved clinical and epidemiologic studies. He has 33 publications to date.

Dr. Shi Wu Wen a research scientist, began collaborating with Dr. Walker early in 2001. Through their collaboration, they quickly realized the similarity in their vision and the opportunities for future studies and thus created a partnership. This joint venture has since been Omni's success. Dr Wen holds a Doctorate in Epidemiology and Statistics from McGill University. His record in perinatal and reproductive health research is exceptional as is his established network of research in this area. He has 67 peer-reviewed published papers, including publications in the New England Journal of Medicine and the Journal of American Medical Association. His publications have been cited more than 500 times. Dr. Wen is the recipient of a CIHR New Investigators award for a 5 year term.