On a related note (sorry about the pseudo-thread jacking), how many phd students does Harvard Biostats accept each year? This information has been rather hard to ascertain from the website.
It seems like the same people are getting asked to go to the same interview sessions (Biostats: Harvard - Emory - Hopkins - Seattle). So for all of you holding on to hope for waitlist spots, my thoughts are that as long as you guys were not outright rejected, there is always a chance.