Dr. Tatsuya Yamashita published a co-authored paper on PLoS One

Management of biliary stricture in patients with IgG4-related sclerosing cholangitis.

PLoS One. 2020 Apr 30;15(4):e0232089. doi: 10.1371/journal.pone.0232089.

https://www.ncbi.nlm.nih.gov/pubmed/32353060