Assuming the occurrence of about 4,000 births during a period of 6 months of filed study observation, the investigators aim at discriminating a 4% difference in the proportion of newborns with heart rate equal or greater 100 beats per minute at 2 minutes of life between the intervention and the control group. The proposed power of study is 80% and the acceptable alpha error is 5%. The percentage for heart rate >100 bpm at 2 minutes of life, during suitable resuscitation using self-inflated bag is 90% and it is the expected value for the intervention group. For the control group it is expected at least 4 points below the value achieved in the intervention group (i.e. no more than 86%).