By Melanie Chapman There is much to appreciate about the new pop-up exhibition Hospital of Emotions, currently on view at St. Vincent Medical Center (2131 W. Third Street, Los Angeles) until July 31. But if you want to maximize the benefits of your visit, avoid the bombardment of images now flooding the internet and even consider not reading this review. Like seeing all the best parts of a movie by watching the trailer, it is better to just go, and go soon, with as little adv