Seminars in Liver Disease, Table of Contents Semin Liver Dis 1998; 18(4): 425-426DOI: 10.1055/s-2007-1007175 LETTER TO THE EDITOR © 1998 by Thieme Medical Publishers, Inc. Letters to the Editor Recommend Article Abstract Buy Article See also: ProtoporphyriaSemin Liver Dis 1998; 18(01): 85-93DOI: 10.1055/s-2007-1007144 Cox TM, Alexander GJM, Sarkany RPE. Protoporphyria. Semin Liver Dis 1998; 18:85-93 Full Text