This is a personal blog, reflecting the opinions of Epi Wonk. Statements on this blog do not represent the opinions of anyone other than the author. They do not represent the opinions or position of the author’s former universities of employment, and they most certainly do not represent the opinions or position of the National Center for Health Statistics or the CDC (except on the subject of vaccines, upon which I’m almost 100% in agreement with the CDC). The information on this blog is intended for discussion purposes only and not as recommendations about how to diagnose or treat illnesses. Note that I’m a Ph.D. in epidemiology, not an M.D. Any personal medical issues you may have should be referred to your physician or your child’s pediatrician. If you freely choose to follow the opinion of a pseudonymous blogger like Epi Wonk over that of your own personal physician or your child’s pediatrician, it is your decision alone, for which you must bear full responsibility.