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APA Citation
Schindler, V., Giezendanner, S., Bütikofer, S., Murray, F., Runggaldier, D., Schnurre, L., Zweig, A., Fried, M., & Pohl, D. (2019). differentiation of functional gastrointestinal disorders from healthy volunteers by lactulose hydrogen breath test and test meal. Journal of gastroenterology and hepatology, 34(5), 843–851. http://access.bl.uk/ark:/81055/vdc_100081491330.0x000041