1. Recurrent abdominal pains: a field survey of 1,000 schoolchildren;Apley;Arch Dis Child,1958
2. Recurrent abdominal pain, headache and limb pains in children and adolescents;Oster;Pediatrics,1972
3. Recurrent abdominal pain;Stickler;Am J Dis Child,1979
4. Recurrent abdominal pain in childhood;Stone;Pediatrics,1970
5. The child with abdominal pains;Apley,1975