HRADSKY , M. . and FURUGÅRD , K. . (1978) “The effect of Metoclopramide (Primperan®) on the Pyloric Sphincter during Gastroscopic Examination: A Double Blind Investigation versus Placebo”, Upsala Journal of Medical Sciences, 83(2), pp. 103–104. doi: 10.3109/03009737809179120.