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APA Citation
Aardoom, M. A., Kemos, P., Tindemans, I., Aloi, M., Koletzko, S., Levine, A., Turner, D., Veereman, G., Neyt, M., Russell, R. K., Walters, T. D., Ruemmele, F. M., Samsom, J. N., Croft, N. M., & de Ridder, L. (2020). international prospective observational study investigating the disease course and heterogeneity of paediatric-onset inflammatory bowel disease: the protocol of the PIBD-SETQuality inception cohort study. BMJ open, 10(7), . http://access.bl.uk/ark:/81055/vdc_100135536073.0x000006