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- American Academy of Allergy, Asthma & Immunology. Tips to remember: Adverse reactions to medications http://www.aaaai.org/patients/publicedmat/tips/adversereactions.s...
- Centers for Disease Control and Prevention: Possible side-effects from vaccines http://www.cdc.gov/VACCINES/vac-gen/side-effects.htm
- National Library of Medicine http://www.nlm.nih.gov/medlineplus/healthtopics.html