Pyloric Stenosis Reference:

Yang J, Carmichael SL, Kaidarova Z, Shaw GM. Risks of selected congenital malformations among offspring of mixed race-ethnicity. Birth Defects Res Part A Clin Mol Teratol. 2004;70(10):820-824.
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Carmichael SL, Shaw GM, Kaidarova Z. Congenital malformations in offspring of Hispanic and African-American women in California, 1989-1997. Birth Defects Res Part A Clin Mol Teratol. 2004;70(6):382-388.
Ref ID: 267

Schecter R, Torfs CP, Bateson TF. The epidemiology of infantile pyloric stenosis. Paediatric & Perinatal Epidemiology 1997; 11:407-427