Carcinoid Heart DiseaseCarcinoid TumorGastrointestinal NeoplasmsAppendiceal NeoplasmsMalignant Carcinoid SyndromeTricuspid Valve StenosisHeartHeart ValvesHydroxyindoleacetic AcidHeart Valve DiseasesTricuspid Valve InsufficiencyTricuspid ValveHeart RateHeart DiseasesPulmonary ValveHeart Defects, CongenitalBioprosthesisEchocardiographyHeart FailureCoronary DiseaseIleal NeoplasmsHeart TransplantationFollow-Up StudiesRheumatic Heart DiseaseBronchial Neoplasms