Splenorenal Shunt, SurgicalSplenic VeinPortasystemic Shunt, SurgicalRenal VeinsHypertension, PortalEsophageal and Gastric VaricesGastrointestinal HemorrhagePortal VeinHepatic EncephalopathyPortacaval Shunt, SurgicalLiver CirculationHypersplenismLiver Cirrhosis, AlcoholicPortasystemic Shunt, Transjugular IntrahepaticPortographyPortal SystemSplenectomyLiver CirrhosisCollateral CirculationSclerosing SolutionsVentriculoperitoneal ShuntCerebrospinal Fluid ShuntsPerioperative CareLiver TransplantationPostoperative ComplicationsSplenic ArteryPeritoneovenous ShuntRecurrenceFollow-Up Studies