RT Journal Article SR Electronic T1 The erroneous use by an accident and emergency department of plain abdominal radiographs in the diagnosis of constipation. JF Archives of Emergency Medicine JO Arch Emerg Med FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 257 OP 258 DO 10.1136/emj.6.4.257 VO 6 IS 4 A1 Bewley, A A1 Clancy, M J A1 Hall, J R YR 1989 UL http://emj.bmj.com/content/6/4/257.abstract AB