by Becker, A, Pitts, M.R, Blondell, J, Kim-Jung, L.Y, Alonso-Katzowitz, J.S, Sievert, J, Morrissey, B, Holquist, C.A, Petersen, A.M, Lackovic, M, Calvert, G.M, Lew, D.H
Published in MMWR. Morbidity and mortality weekly report (03.06.2005)