Since the procedures adopted in all these studies varied greatly it is conceivable that the diversity and the inconsistency of the results were partly due to the lack of a standardized procedure. The ...

The d-xylose absorption test is useful in the diagnosis of tropical and idiopathic sprue, 1–4 but results are variable in other disorders and in elderly persons without intestinal disease. 5,6 ...

Infrared spectroscopy (IRS) is a technique used to analyze individual substances in isolation or a mixture, using their spectral information. IRS is based on the measurement of the wavelength and ...