Citations

http://www.nhlbi.nih.gov/health/health-topics/topics/sca

http://www.sicklecelldisease.org/index.cfm?page=about-scd

http://nikon2.magnet.fsu.edu/galleries/pathology/sicklecellanemialarge.html

http://microbeonline.com/relationship-sickle-cell-anemia-malaria/