HALLORAN, M e ; LONGINI JR, I. M. ; STRUCHINER, C. J. . Desing and Interpretation of Vaccine Field Studies. Epidemiology Reviews, v. 21, n.1, p. 73-88, 1999.
HALLORAN, M e ; LONGINI JR, I. M. ; STRUCHINER, C. J. . Desing and Interpretation of Vaccine Field Studies. Epidemiology Reviews, v. 21, n.1, p. 73-88, 1999.