<prompt> During neonatal resuscitation, when should chest compression be started and what is the ideal ratio of chest compression to ventilationHeart rate 60 min; 30:2Heart rate 100 min; 2:1Heart rate 100 min; 15:1Heart rate 60min; 3:1  <response>: During neonatal resuscitation, chest compression is started when heart rate 60 Min.Ratio of chest compression to ventilation is 3:1 90 compression : 20 breath 