Mean duration of<unk>  is approximately 2 hrs/day for the first 6 wks
This decreases to 72 mins/day by age 10-12 wks
As many as 43% of<unk> s experience excessive<unk> 
5% of<unk> s are found to have underlying disease
Crying infant
Occult infection
Baby feeding and nutrition
Sepsis
Neonatal rashes
Meningitis
Bougie
UTI