Novel NKX2-5 germline mutation in a Moroccan child with transitional atrio-ventricular septal defect (tAVSD) - Ihssane El-Bouchikhi; Khadija Belhassan; Fatima Zohra Moufid; Mohammed Iraqui Houssaini; Karim Ouldim; Samir Atmani (The Turkish Journal of Pediatrics)