1)Hematologic changes in pregnancy(UpToDate) http://www.uptodate.com/contents/hematologic-changes-in-pregnancy
2)Center for Disease Control(CDC):The Pediatric Nutrition Surveillance System(PedNSS)http://www.cdc.gov/pednss
3)Thrombocytopenia in pregnancy(UpToDate)http://www.uptodate.com/contents/thrombocytopenia-in-pregnancy
4)George JN, et al:Idiopathic thrombocytopenic purpura:a practice guideline developed by explicit methods for the American Society of Hematology. Blood 88:3-40, 1996
5)Provan D, et al:International consensus report on the investigation and management of primary immune thrombocytopenia. Blood 115:168-186, 2010