Burisch, J. ., Kiudelis, G. ., Kupcinskas, L. ., Kievit, H. ., Andersen, K. ., , … Epi-IBD, group. . (2018). Natural disease course of Crohn’s disease during the first 5 years after diagnosis in a European population-based inception cohort: an Epi-IBD study. Gut. https://doi.org/10.1136/gutjnl-2017-315568 (Original work published 2018)

Myers, S. . (2013). Normality in analytical psychology. Behavioral Sciences (Basel, Switzerland), 3(4), 647-61. https://doi.org/10.3390/bs3040647