Borges M A, Carmo M I, Sambo M R, Borges F C, Araújo C M, Campos M J, Jacinto A M, Mansinho K, Leitão O C
Department of Internal Medicine, Hospital Egas Moniz, Lisbon, Portugal.
Int J Infect Dis. 1998 Jan-Mar;2(3):164-7. doi: 10.1016/s1201-9712(98)90121-7.