Temporary cardiac pacing for severe hemodynamic disturbance caused by bradyarrhythmia in children: a report of 3 cases 
LIU Dong, LIU Bin, JIA Peng, LI Gang, LIU Qin, WAN Xiaohong, SONG Meixuan
Journal of Clinical Pediatrics . 2018, (7): 490 - .  DOI: 10.3969/j.issn.1000-3606.2018.07.003