Mady Hornig, immunologist, article

http://simmaronresearch.com/2013/03/hornig/

MTHFR and thimerosal (mercury compound used as preservative in some vaccines)

http://chronicdiseasetalk.wordpress.com/2013/03/13/mthfr-and-thimerosol/

Methylation - really good article that helps you to understand SNPs

If you know what your or your kids' SNPs are (perhaps from 23andme or other testing) then you can use this info to work out what they may mean:

http://www.heartfixer.com/AMRI-Nutrigenomics.htm#MAO%20A:%C2%A0%20Monoamine%20Oxidase%20A

Maybe our kids hearts should be checked before using Azithromycin?

http://www.cbsnews.com/8301-204_162-57573858/fda-warns-azithromycin-z-pack-antibiotics-could-lead-to-deadly-heart-rhythms-for-some/