RT Journal
A1 Moreno MA, Furtner F, Rivara FP
T1 FUnctional abdominal pain in children and adolescents
JF JAMA Pediatrics
JO JAMA Pediatrics
YR 2013
FD February 1
VO 167
IS 2
SP 204
OP 204
DO 10.1001/jamapediatrics.2013.1665
UL http://dx.doi.org/10.1001/jamapediatrics.2013.1665
AB 
There are many causes of chronic recurrent abdominal pain in children, but parents may find it surprising that it is very common for there to be no clear cause identified for childhood abdominal pain even though examinations and tests have been done.