ocr: Location Author Year Patients Relative Risk 95% Confidence Interval North Sweden Hardell & Sandstrom21 1979 46 5.3 2.4-11.5 South Sweden Eriksson et al?? 1981 99 6.8 2.6-17.5 New Zealand Smith ct al23 1984 82 1.6 0.7-3.3 England & Wales Balarajan & Acheson? 1984 1961 1.15 0.83-1.59 New York State: Vietnam service Greenwald et al25 1984 281 0.7 0.17-2.92 VA patients: Vietnam scrvice Kang et al26 1986 234 0.83 0.63-1.09 Kansas Hoar ct al27 1986 133 0.7-1.6
