@inbook{1133365940, author={Marshall A. Lichtman and Kenneth Kaushansky and Josef T. Prchal and Marcel M. Levi and Linda J. Burns and James O. Armitage}, title={The Vascular Purpuras}, booktitle={Williams Manual of Hematology, 9e}, publisher={McGraw-Hill Education}, address={New York, NY}, year={2017}, url={hemonc.mhmedical.com/content.aspx?aid=1133365940} }