MoroccoSurinameTurkeySapotaceaeNetherlandsJewsAfrica, NorthernGibraltarEmigration and ImmigrationNetherlands AntillesAlgeriaEmigrants and ImmigrantsMediterranean RegionConsanguinityEquidaeBulinusEar CanalTay-Sachs DiseaseFounder EffectTransients and MigrantsChinEnvironment, ControlledEffect Modifier, EpidemiologicEthnic GroupsGenes, RecessiveMiddle EastPedigreeSella Turcicabeta-N-AcetylhexosaminidasesIsraelSpainFamilial Mediterranean FeverHaplotypesHomozygote