Knoll S, Jochum D, Talbird S. Comparative cost benefit analysis of two new Pneumococcal Conjugate Vaccines (PHiD-CV and PCV-13). Klin Padiatr. 2010 Jun 1;222(Suppl 1):S51-2.
Garcia-Esteve L, Torres A, Navarro P, Aguado J, Ascaso C. Maternidad the planned y psicomorbilidad: un riesgo evitable / Unplanned pregnancy and psychological morbidity: an avoidable risk. Fac Med Barc. 2005 Jul;32(3):111-8.