I got my interview invitation on Jan 29th, but they didn't settle it down until the end of Feb. I guess they are really busy scheduling Skype interviews for international students... I have a friend who is currently a first year grad student at UTSW and she said she got admitted four days right after her Skype interview. I interviewed last Wednesday so it's already been a week but I am still remain positive!! We will see...
I applied 12 and got 5 interviews (UMD, BCM, MD Anderson/UTH, Wisconsin-Madison and UTSW). So far I only got offers from BCM and MD, and I think I am on the wait list for UMD (which is super weird...but I don't plan to go anyway). I am still waiting to hear back from UTSW and will have a interview at W-M tomorrow (they gave me admission first but asked me to find a professor that is willingly to take me before receiving a formal offer... I don't plan to go either since they don't do rotation)...