%0 Journal Article %@ 1438-8871 %I JMIR Publications %V 23 %N 9 %P e33534 %T Addendum to the Acknowledgments: Stepwise-Hierarchical Pooled Analysis for Synergistic Interpretation of Meta-analyses Involving Randomized and Observational Studies: Methodology Development %A Shin,In-Soo %A Rim,Chai Hong %+ Department of Radiation Oncology, Ansan Hospital, Korea University, Jeokgeumro 123, Danwon Gu, Gyeonggido, 15355, Republic of Korea, 82 314126850, crusion3@naver.com %D 2021 %7 20.9.2021 %9 Corrigenda and Addenda %J J Med Internet Res %G English %X %M 34543226 %R 10.2196/33534 %U https://www.jmir.org/2021/9/e33534 %U https://doi.org/10.2196/33534 %U http://www.ncbi.nlm.nih.gov/pubmed/34543226