In the Research Letter titled “Evaluation of Potencies of Immune Globulin Products Against Hepatitis A,”1 published online January 9, 2017, there was an omission in the authorship contributions. The following statement should have been included: “Ms Tejada-Strop and Dr Costafreda served as co–first authors, each with equal contribution to the manuscript.” This article was corrected online.
C-G. Evaluation of potencies of immune globulin products against hepatitis A [published online January 9, 2017]. JAMA Intern Med