Mia Amber Davis, the plus-size model and "Road Trip" actress who unexpectedly passed away during routine knee surgery in May, died from a blood clot in her lungs, E! Online reports. The Los Angeles County Coroner's Office released an updated death certificate after an autopsy and a series of toxicology tests were performed, finding that Davis had a pulmonary thrombo-embolism. According to TMZ.com, Davis' husband Michael Yard believes that the surgery was responsible for the blood clot, claiming...