Complicated malaria caused by Plasmodium falciparum with parasitemia >50% Miguel Morante-Ruiz; Cristina Ortega-Portas; Luis José Betancourt-Cuadra; Miguel Górgolas Hernández-Mora;

Human intestinal spirochetosis: an entity associated with sexual transmitted infections Alejandro De Gea-Grela; Alfredo Maldonado-Barrueco; Clara Cabañuz; Mariana Díaz-Almiron; Alicia Rico; Guillermo Ruíz-Carrascoso; Maria Elena Palacios; Eduardo Martín-Arranz; Raquel Escudero-Nieto; José I Bernardino;