“Occurrence of conotruncal heart birth defects in Texas: a comparison of urban/rural classifications.”
, The Journal of rural health : official journal of the American Rural Health Association and the National Rural Health Care Association
, vol. 26, no. 2, pp. 164-74, 2010.
“Urban versus rural residence and occurrence of septal heart defects in Texas.”
, Birth defects research. Part A, Clinical and molecular teratology
, vol. 85, no. 9, pp. 764-72, 2009.