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APA Citation
Singla, M., Hutfless, S., Al Kazzi, E., Rodriguez, B., Betteridge, J., & Brant, S. (2020). clinical codes combined with procedure codes increase diagnostic accuracy of Crohn's disease in a US Military health record. BMJ open gastroenterology, 7(1), . http://access.bl.uk/ark:/81055/vdc_100127577376.0x000020