Diagnosis of a Neonate With Long QT Syndrome and Severe Complications Delayed due to an Unrecognized Familial History. - Kawabata, Kaho; Chida-Nagai, Ayako; Takeda, Kenta; Honjo, Ryota; Sasaki, Daisuke; Yamazawa, Hirokuni; Kaneshi, Yosuke; Scaramuzza, Andrea (Case Reports in Pediatrics, 2025)