Discretionary Corrigenda
For corrigenda that are discretionary and a result of author-oversight (e.g., corrections in the affiliation etc.) we charge a $190 processing fee to make changes in the original paper and publish an erratum. Please submit a correction statement (text similar to http://www.jmir.org/2015/3/e76/) at http://www.jmir.org/author/submit/1 under the section "Discretionary Corrigenda".