TI - PRickly pear—galapagos islands PT - JOUR DP - 2011 TA - Archives of Internal Medicine pages = {1988}, VI - 171 IP - 22 AID - 10.1001/archinternmed.2011.557 [doi] 4100 - http://dx.doi.org/10.1001/archinternmed.2011.557 SO - Archives of Internal Medicine December 12, 2011 171(22):1988