The editorial by Arun K. Gadre entitled "The Problem of Gift and Honorary Authorship - Who is an Author?" (J Int Adv Otol 2016; 12), Obtituaries by David A. Moffat entitled "In Memoriam: Per Moller"(J Int Adv Otol 2016; 12: 222) and by Angel Ramos Macias entitled "In Memoriam: John Niparko" (J Int Adv Otol 2016; 12: 223) were published without a DOI due to a technical error. These papers were since provided with the DOIs listed below; • Arun K. Gadre. The Problem of Gift and Honorary Authorship - Who is an Author? DOI: 10.5152/iao.2017.31013 • David A. Moffat. In Memoriam: Per Moller. DOI: 10.5152/iao.2017.31011 • Angel Ramos Macias. In Memoriam: John Niparko. DOI: 10.5152/iao.2017.31012.