A historical review of classic Helicobacter pylori publications in science citation index expanded

Which Helicobacter pyloripublications in the Web of Science are classic? This study identified classic papers by referring to the Science Citation Index Expanded, which covers 59,904 documents related Helicobacter pyloripublications in the Web of Science from 1900 to 2016. The present paper lists classic Helicobacter pyloripapers published between 1991 and 2007. Classic documents that have been cited at least 1,000 times from the Web of Science Core Collection were assessed regarding language of publication, document type publication outputs, distribution of outputs in journals and Web of Science categories, publications of authors, institutions, countries as well as citation life cycles of classic documents. An article published by Parsonnet et al. in 1991 obtained the highest number of citations from the Web of Science Core Collection during the period from its initial publication to the end of 2016. The most impactful article in 2016 was published by Uemura et al. in 2001 with 163 citations in 2016. In addition, results showed that three main research focuses in H. pyloristudy were gastric cancer, low-grade gastric lymphoma, and the CagAgene.