A medical technique comprises the steps of attaching {HEAD ~ a hammock} to {TAIL ~ the head rail} and foot rail of a crib, and placing a child in the hammock 
to
A medical technique comprises the steps of attaching { HEAD ~ a hammock } to { TAIL ~ the head rail } and foot rail of a crib , and placing a child in the hammock
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH