AU  - Waldman M, Nicholson S
TI  - Autism prevalence and precipitation: The potential for cross-level bias—reply
PT  - JOUR
DP  - 2009
TA  - Archives of Pediatrics & Adolescent Medicine
pages = {492-493},
VI  - 163
IP  - 5
AID  - 10.1001/archpediatrics.2009.84 [doi]
4100  - http://dx.doi.org/10.1001/archpediatrics.2009.84
SO  - Archives of Pediatrics & Adolescent Medicine May 4, 2009 163(5):492