label: Gastric emptying, serial collection of 7 timed breath specimens, non-radioisotope carbon-13 (13C) spirulina substrate, analysis of each specimen by gas isotope ratio mass spectrometry, reported as rate of 13CO2 excretion
label_lc: gastric emptying, serial collection of 7 timed breath specimens, non-radioisotope carbon-13 (13c) spirulina substrate, analysis of each specimen by gas isotope ratio mass spectrometry, reported as rate of 13co2 excretion