http://blog.theportlandhospital.com/babies-and-toddlers/top-allergy-consultant-dr-george-du-toit-answers-your-top-7-questions-the-portland-blog (http://blog.theportlandhospital.com/babies-and-toddlers/top-allergy-consultant-dr-george-du-toit-answers-your-top-7-questions-the-portland-blog)