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APA Citation
Tewari, N., Parra-Blanco, A., Sami, S., Budihal, S., Lewis, N., Catton, J., & Ragunath, K. (n.d.). pTH-062 Clinic based outpatient transnasal endoscopy:implementation and evaluation of an innovative endoscopy service. Gut, 67, A42–A43. http://access.bl.uk/ark:/81055/vdc_100144727094.0x000041