Doctor who replaced disgraced medical school dean resigns

The head of the University of Southern California's medical school resigned Thursday, less than a year after he took over for a dean who resigned and was later the center of allegations that he smoked meth and hung out with criminals.

Dr. Rohit Varma chose to step down after the university "learned previously undisclosed information that caused us to lose confidence in Dr. Varma's ability to lead the school," USC Provost Michael Quick said in a letter to USC officials.

He added: "Our leaders must be held to the highest standards."

Quick didn't provide specifics. However, the announcement came as the Los Angeles Times was prepared to publish a story...