Occhialini, A., Marais, A., Urdaci, M., Sierra, R., Muñoz, N., Covacci, A., & Mégraud, F. (2001). Composition and Gene Expression of the cag Pathogenicity Island in Helicobacter pylori Strains Isolated from Gastric Carcinoma and Gastritis Patients in Costa Rica. American Society for Microbiology.

Occhialini, Alessandra, Armelle Marais, Maria Urdaci, Rafaela Sierra, Nubia Muñoz, Antonello Covacci, e Francis Mégraud. Composition and Gene Expression of the Cag Pathogenicity Island in Helicobacter Pylori Strains Isolated From Gastric Carcinoma and Gastritis Patients in Costa Rica. American Society for Microbiology, 2001.

Occhialini, Alessandra, et al. Composition and Gene Expression of the Cag Pathogenicity Island in Helicobacter Pylori Strains Isolated From Gastric Carcinoma and Gastritis Patients in Costa Rica. American Society for Microbiology, 2001.