Ramírez, Hernán, Teresa Aristizábal, Arthur Levin, William A. Blattner, Mariela Pantoja, and Elizabeth Maloney. 1988. “Epidemiological Aspects of HTLV-I Virus Infection in Localities of the Cauca Valley and Pacific Coast”. Colombia Medica 19 (2):53-57. https://doi.org/10.25100/cm.v19i2.6207.