| American Medical Association | www.ama-assn.org |
| Centers for Disease Control and Prevention (CDC) | www.cdc.gov |
| Federal Drug Administration | www.fda.gov |
| Institute of Health (NIH) | www.nih.gov |
| Mayo Clinic | www.mayohealth.org |
| National Heart, Lung, and Blood Institute (NHLBI) | www.nhlbi.nih.gov |
| NDC Directory | www.fda.gov/cder/ndc |
| World Health Organization (WHO) | www.who.int/en |
| National Home Infusion Association (NHIA) | www.nhianet.org |
| Plasma Protein Therapeutics Association (PPTA) | www.pptaglobal.org |
| American Association of Blood Banks | www.aabb.org |
| CDC's Blood Disorders Site | www.cdc.gov/ncbdd/nbd/hemophilia.htm |
| Hemophilia Federation of America | www.hemophiliafed.org |
| Hemophilia Galaxy from Baxter Bioscience | www.hemophiliagalaxy.com |
| Hemophilia Moms from CSL Behring | www.hemophiliamoms.com |
| Hemophilia Village from Wyeth -Ayerst | www.hemophiliavillage.com |
| LA Kelley Communications | www.kelleycom.com |
| Mayo Clinic | www.mayoclinic.com/health/hemophilia/ DS00218 |
| National Hemophilia Foundation (NHF) | www.hemophilia.org |
| National Human Genome Research Institute | www.genome.gov |
| National Organization for Rare Disorders | www.rarediseases.org |
| NHLBI Hemophilia Site | www.nhlb.nih.gov |
| World Federation of Hemophilia (WFH) | www.wfh.org |
| The Alpha-1 Foundation | www.alphaone.org |
| American Academy of Allergy, Asthma & Immunology | www.aaaai.org |
| Clinical Immunology Society | www.clinimmsoc.org |
| Immune Deficiency Foundation | www.primaryimmune.org |
| Immune Disease.com | www.immunedisease.com |
| Immune Globulin Therapy | www.immune-globulin.com |
| Jeffrey Modell Foundation | www.jmfworld.com |
| National Organization for Rare Disorders | www.rarediseases.org |
| NHLBI Idiopathic Thrombocytopenic Purpura Site | www.nhlbi.nih.gov |