Letters to the EditorLetter to the Editor Does Prenatal Ultrasound Increase Risk of Autism? Christopher D. Olson, DO Notes and Affiliations Notes and Affiliations Published: February 1, 2009 Christopher D. Olson, DO, Shamokin Dam, Pa, olsondo@ptd.net J Osteopath Med; 109(2): 71-72 https://doi.org/10.7556/jaoa.2009.109.2.71