Beta-lactam antibiotics and viridans group streptococci Horacio A. Lopardo; Laura Vigliarolo; Laura Bonofiglio; Paula Gagetti; Gabriela García Gabarrot; Sara Kaufman; Marta Mollerach; Inés Toresani; Martha von Specht;

Resistance to ß-lactams in Streptococcus pneumoniae Martha von Specht; Gabriela García Gabarrot; Marta Mollerach; Laura Bonofiglio; Paula Gagetti; Sara Kaufman; Laura Vigliarolo; Inés Toresani; Horacio A. Lopardo;