Giacchino R, Giambartolomei G, Tasso L, Timitilli A, Castagnola E, Brisigotti M, Micalizzi C
Department of Infectious Diseases, G. Gaslini Children's Hospital, Genova, Italy.
Trans R Soc Trop Med Hyg. 1993 May-Jun;87(3):310. doi: 10.1016/0035-9203(93)90141-c.