1. National Conference of State Legislators. (2011). Newborn hearing screening laws. Retrieved on January 29, 2013, from the World Wide Web: www.ncsl.org/issues-research/health/newborn-hearing-screening-state-laws.aspx
2. Smolkin, T. et al. (2012). Birth by cesarean delivery and failure on first otoacoustic emissions hearing test.Pediatrics, 130(1), e95-e100.
3. National Institute on Deafness and Other Communication Disorders. (2013). Research. Retrieved on January 29, 2013, from the World Wide Web: www.nidcd.nih.gov/research/Pages/Default.aspx