1 Faculty of Medicine, University of Zurich, Zurich, Switzerland; Department of Medicine, Mount Auburn Hospital, Harvard Medical School, Cambridge, Massachusetts. Electronic address: [email protected].
2 Department of Medicine, Mount Auburn Hospital, Harvard Medical School, Cambridge, Massachusetts; Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand.
3 Department of Medicine, Mount Auburn Hospital, Harvard Medical School, Cambridge, Massachusetts.