Use of a microquantity enzyme immunoassay in a large-scale study of measles, mumps, and rubella immunity in Italy - F. Condorelli; A. Stivala; R. Gallo; A. Marino; C. M. Battaglini; A. Messina; G. Russo; A. Castro; G. Scalia (European Journal of Clinical Microbiology & Infectious Diseases, 1998)