autism causation: many factors per individual

[Guest guest]

well expressed concept:

On causation: " .../there are many factors: Chemical factors,

nutritional factors, microbiological factors, physical factors like

radiation and ultrasound...I think multiple factors contribute, not just

across the population, but within any one individual./ "

(Hertz-Picciotto, 2011)

as presented in:

Autism and Ultrasound

© May 9, 2011

citing:

Hertz-Picciotto I. (2011). Autism Now. PBS Newshour (2011). Air date:

April 19, 2011. Retrieved April 20, 2011

from

http://www.pbs.org/newshour/bb/health/jan-june11/ciccottoext_04-19.html?/

..