What is the missing reagent for the following reaction? 
Definitions:
Cephalhematoma
A hematoma between the skull and the periosteum in newborns, usually as a result of birth trauma.
Breastfeeding Initiation
The start of breastfeeding a newborn shortly after birth, which is crucial for the baby's nutrition and developing a bond between mother and child.
Supplemental Oxygen
Additional oxygen provided to individuals who are not able to get sufficient oxygen on their own, often through a mask or nasal cannula.
Reflexes
Involuntary and nearly instantaneous movements in response to a stimulus as part of the body's nervous system function.
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