Authors:
TRIASSI M
RIBERA G
BARRUFFO L
BARBONE S
MEDDA E
GRANDOLFO ME
Citation: M. Triassi et al., PERSISTENCE OF IMMUNITY TO POLIOMYELITIS AMONG A SOUTHERN-POPULATION THAT RECEIVED 4 DOSES OF OPV 5 TO OVER-15 YEARS BEFORE, European journal of epidemiology, 12(1), 1996, pp. 5-8