S1377 Postprandial Breath H2 Using a Portable Handheld App-Connected Device to Predict the Presence of Small Intestinal Bacterial Overgrowth as Well as the Response to Antibiotic Treatment. (October 2021) - Barahona, Guillermo; Moran, Áine; Bride, Barry Mc; Villatoro, Luisa; Burns, Robert B.; Konings, Bo; Bulat, Robert S.; McKnight, Megan E.; Pasricha, Pankaj J.