compared with controls , the frequency of use of an electric blanket was slightly lower in men with seminoma ( rr = 0.7 , 95 % ci 0.5-1.2 ) and slightly higher among men with nonseminoma germ cell tumors ( rr = 1.4 , 95 % ci 0.9-2.3 ) .
C0036631
seminoma
C0205851
germ