Volume 47, no. 3, p. 1120-1124, 2003. Page 1121, Table 1: “Codon 236” should read “Codon 220,” “M236V” should read “M220V” in footnote c, “M236K” should read “M220K” in footnote e, and “M236T” should read “M220T” in footnote g.
Page 1122, column 1, line 1: “codon 236” should read “codon 220.”
Page 1122, column 1, line 2: “Methionine 236” should read “Methionine 220.”
Page 1122, column 1, lines 57 and 59, and column 2, line 2: “M236V” should read “M220V.”
Page 1122, column 2, line 4: “methionine 236” should read “methionine 220.”
