author = { Janssen, Christine Elisabeth AND Globig, Anna-Maria AND Busse Grawitz, Andrea AND Bettinger, Dominik AND Hasselblatt, Peter },

title = { Seasonal variability of vitamin D status in patients with inflammatory bowel disease - a retrospective cohort study },

publisher = {Public Library of Science (PLoS)},

publisher = {: Albert-Ludwigs-Universität Freiburg},

isbn = {1932-6203},

year = {2019},

year = {, 2019},

address = { San Francisco, CA , ; Freiburg },

url = { http://slubdd.de/katalog?TN_libero_mab2 }