1. QT interval in human electrocardiogram in absence of cardiac disease;Carter, E.P.; Andrus, C.;JAMA
2. HR QTc interval and blood calcium levels in newborn infants;Giacoia, G.P.; Wagner;Pediatrics,1978
3. The QTc and QT, interval and ionized calcium in newborns;Nelson, N.; Ihes, L.;Clin Physiol,1989
4. Diagnostic problems in neonatal hypocalcaemia;Yunes-Zarraga, J.L.; Velez-Meza, V.; Velazquez-Quintana, N.;Bol Med Hosp Infant Mex,1989
5. Detection of early onset neonatal hypocalcaemia in low birth weight infants by QT, and QTc interval measurement;Nekvasil, R.; Stejskal, J.; Tuma, A.;Acta Paediatrica Academiae Scientiarum Hungarcae,1980