RT Journal Article SR Electronic T1 Abdominal pain without physical findings is not always without physical cause JF Cleveland Clinic Journal of Medicine JO Cleve Clin J Med FD Cleveland Clinic SP 527 OP 528 DO 10.3949/ccjm.91b.09024 VO 91 IS 9 A1 Mandell, Brian F. YR 2024 UL http://www.ccjm.org/content/91/9/527.abstract AB