The two men, Dr. Suganthan Kayilasanathan and Dr. Amitabh Chauhan, are charged with administering a noxious substance and gang sexual assault. The woman’s name is protected by a publication ban.
Police allege that in February 2011, the woman arranged to meet a medical school friend at a downtown Toronto hotel bar to get career advice. When she arrived, the two men charged were there to meet her.
After drinks at different two bars, police say the woman was drugged then taken to a hotel room where both men sexually assaulted her.
None of the allegations have been proven in court.
The Crown's case reportedly includes a rape kit, which revealed DNA evidence of the men's bodily fluids found on the woman’s body, underwear and bra.
Testimony is also expected today from a 21-year-old woman who previously dated one of the accused.
Police allege in 2003 the woman went out with him in Kingston, Ont., and he put an unknown substance into the woman's drink and then sexually assaulted her.