TI - ACacia tree, maasai mara national reserve, kenya, africa PT - JOUR DP - 2010 TA - Archives of Internal Medicine pages = {528}, VI - 170 IP - 6 AID - 10.1001/archinternmed.2010.4 [doi] 4100 - http://dx.doi.org/10.1001/archinternmed.2010.4 SO - Archives of Internal Medicine March 22, 2010 170(6):528