Preface.

MLA

Grimm, Michael. “Preface.” Journal of Gastroenterology & Hepatology, vol. 20, Sept. 2005, p. A1. EBSCOhost, https://doi.org/10.1111/j.1440-1746.2005.04093.x.

APA

Grimm, M. (2005). Preface. Journal of Gastroenterology & Hepatology, 20, A1. https://doi.org/10.1111/j.1440-1746.2005.04093.x

Chicago

Grimm, Michael. 2005. “Preface.” Journal of Gastroenterology & Hepatology 20 (September): A1. doi:10.1111/j.1440-1746.2005.04093.x.