1. An approach to evidence-based therapeutic apheresis;McLeod;J Clin Apheresis,2002
2. 2010 http://www.caridianbct.com/location/north-america/products-and-services/Pages/cobe-spectra-apheresis-system. aspx
3. 2010 http://www.caridianbct.com/location/north-america/products-and-services/Pages/spectra-optia-apheresis-system.aspx
4. 2011 http://www.fresenius-kabi.com/2306.htm