References:
1.    American Academy of Allergy Asthma & Immunology (AAAA&I): http://www.aaaai.org/conditions-and-treatments/library/at-a-glance/allergic-reactions
2.    American Latex Allergy Association (ALAA): http://latexallergyresources.org/articles/web-article-creating-safe-school-latex-sensitive-children
3.    Asthma and Allergy Foundation of America:  http://www.aafa.org/display.cfm?id=9&sub= 19&cont=255
4.    Centers for Disease Control and Prevention (CDC):
     https://www.cdc.gov/niosh/docs/97-135/pdfs/97-135.pdf
     https://www.cdc.gov/niosh/docs/98-113/pdfs/98-113.pdf
5.    Liptak, G. S. (1997). Neural tube defects. Children with disabilities: A medical primer, 429-552.
6.    MD Guidelines ™: http://www.mdguidelines.com/allergy
7.    Occupational Safety and Health Administration: https://www.osha.gov/
8.    Chicago Tribune:
     http://www.chicagotribune.com/lifestyles/health/92331695-132.html
     http://articles.chicagotribune.com/2003-11 08/news/0311080049_1_balloon-elementary-disability-experts