http://www.nlm.nih.gov/medlineplus/ency/article/000532.htm MedlinePlus chronic lymphocytic leukemia (CLL) http://www.nlm.nih.gov/medlineplus/ency/article/000532.htm CLL: MP Encyclopedia - CLL Encyclopedia MP-LLC http://www.nlm.nih.gov/medlineplus/ency/article/000532.htm Encyclopedia MP-LLC nlm.nih.gov advanced chronic lymphocytic leukemia http://www.nlm.nih.gov/medlineplus/ency/article/000532.htm Chronic lymphocytic leukemia (CLL) chronic lymphocytic leukemia