Upile, T., Stimpson, P., Christie, M., Mahil, J., Tailor, H., & Jerjes, W. K. (2011). Use of gel caps to aid endoscopic insertion of nasogastric feeding tubes: A comparative audit. BioMed Central.

Upile, Tahwinder, Paul Stimpson, Miles Christie, Jaspal Mahil, Hitesh Tailor, و Waseem K. Jerjes. Use of Gel Caps to Aid Endoscopic Insertion of Nasogastric Feeding Tubes: A Comparative Audit. BioMed Central, 2011.

Upile, Tahwinder, et al. Use of Gel Caps to Aid Endoscopic Insertion of Nasogastric Feeding Tubes: A Comparative Audit. BioMed Central, 2011.