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Boey, Christopher Chiong Meng and Yap, S.B. and Goh, Khean Lee (2000) The prevalence of recurrent abdominal pain in 11- to 16-year-old Malaysian schoolchildren. Journal of Paediatrics and Child Health, 36 (2). pp. 114-116. ISSN 1034-4810, DOI https://doi.org/10.1002/1098-2760(20000820)26:4<221::AID-MOP5>3.0.CO;2-K.