RT Journal Article SR Electronic T1 Sudden loss of vision: Purtscher retinopathy in multiple myeloma JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association DO 10.1503/cmaj.081968 A1 Amit Nautiyal A1 Guillermo Amescua A1 Angus Jameson A1 Joel F Gradowski A1 Feiyu Hong A1 Bernard Doft YR 2009 UL http://www.cmaj.ca/content/early/2009/11/09/cmaj.081968.abstract AB