Gallbladder DiseasesGallbladderGallbladder NeoplasmsCholecystectomyCholecystitisGallbladder EmptyingCholelithiasisCholecystectomy, LaparoscopicCholecystographyGallstonesImino AcidsCholecystitis, AcuteCholecystolithiasisBiliary DyskinesiaAcalculous CholecystitisTechnetium Tc 99m DisofeninPolypsDesogestrelContraceptives, Oral, SyntheticUltrasonographyCholangiopancreatography, Endoscopic RetrogradeScotlandRetrospective StudiesBile