Premature detachment of JSPH-1 pH capsule in our study (n=1). The sudden prolonged dropped in pH represented pH capsule detached into stomach, and then sharp raised when the capsule entered the small intestine. The data following capsule detached were invalid.
Li et al. BMC Gastroenterology 2013 13:10 doi:10.1186/1471-230X-13-10