Williams W V, Rook A H, Freundlich B F, Fang Q, Shaw E, Lessin S, Weiner D B
Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia 19104, USA.
Ann N Y Acad Sci. 1995 Jul 7;756:424-7. doi: 10.1111/j.1749-6632.1995.tb44552.x.