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APA Citation
Sandha, S., Stach, J., Bullard, M., Halloran, B., Blain, H., Grigat, D., Lang, E., & Veldhuyzen van Zanten, S. (n.d.). a227 USE OF GBS SCORE, TIME TO ENDOSCOPY, AND PROTON PUMP INHIBITOR USE IN PATIENTS PRESENTING WITH UPPER GI BLEEDING TO THE EMERGENCY DEPARTMENT. Journal of the Canadian Association of Gastroenterology, 2, 443–444. http://access.bl.uk/ark:/81055/vdc_100092356078.0x000001