M. Linet, E. Hotch, R.A. Kleinerman, L.L. Robison, W.T. Kaune, D.R. Friedman, R.K. Severson, C.M. Haines, C.T. Hartsock, S. Niwa, S. Wacholder and R.E. Tarone: Residential exposure to magnetic fields and acute lymphoblastic leukemia in children, N. Eng. J. Med. 337:1-7, 1997.