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Research",[],"2026-08-26T02:16:01.910993Z","2026-05-13T02:55:06.271836Z",{"nct_id":77,"title":78,"phases":79,"status":13,"updated_at":80,"content_modified":81},"NCT00921986","Biospecimen Repository for Cardiac Arrhythmias at the Cleveland Clinic",[],"2026-08-26T02:16:55.892527Z","2026-05-13T02:55:06.066888Z",{"nct_id":83,"title":84,"phases":85,"status":13,"updated_at":14,"content_modified":86},"NCT05618054","Periaqueductal Gray-vagus Nerve Interface Malfunction Explain the Natural History With Its Numerous Co-morbidities?",[],"2026-05-05T02:43:27.748701Z",{"nct_id":88,"title":89,"phases":90,"status":13,"updated_at":91,"content_modified":92},"NCT05741112","The Long COVID-19 Wearable Device Study",[],"2026-08-26T02:15:44.309045Z","2026-05-05T02:43:27.245853Z",{"nct_id":94,"title":95,"phases":96,"status":97,"updated_at":98,"content_modified":99},"NCT06953661","Ultrasound Guided Stellate Ganglion Block in Postural Tachycardia Syndrome",[],"NOT_YET_RECRUITING","2026-08-26T02:17:44.240289Z","2026-05-05T02:43:29.167531Z",{"nct_id":101,"title":102,"phases":103,"status":97,"updated_at":104,"content_modified":105},"NCT07657507","Presentation of Young Adults With and Without Joint Hypermobility",[],"2026-08-26T02:16:21.385056Z","2026-06-18T12:24:03.102933Z",{"nct_id":107,"title":108,"phases":109,"status":97,"updated_at":110,"content_modified":111},"NCT05618067","The Impact of Improved Vagal Function on Periaqueductal Gray Connectivity",[],"2026-08-26T02:16:41.943926Z","2026-05-05T02:43:29.044506Z",{"nct_id":113,"title":114,"phases":115,"status":97,"updated_at":116,"content_modified":117},"NCT06672861","Development and Validation of the Kansas City Cardiac Dysautonomia Questionnaire (KCDysQ)",[],"2026-08-26T02:16:15.345907Z","2026-05-05T02:43:27.750248Z",{"nct_id":119,"title":120,"phases":121,"status":122,"updated_at":123,"content_modified":124},"NCT02725060","Autoimmune Basis for Postural Tachycardia 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