García Vallejo, F., Bonilla, R., Gallego, G., Rugeles, M.T. and Borrero, I. 1992. Amplification of human lymphotropic virus 1 (HTLV-1) DNA segments in patients with tropical spastic paraparesis and asymptomatic seropositive patients. Colombia Medica. 23, 2 (Jun. 1992), 50–56. DOI:https://doi.org/10.25100/cm.v23i2.6339.