Figure 4From: New Zealand adolescents’ cellphone and cordless phone user-habits: are they at increased risk of brain tumours already? A cross-sectional study Short title: Years of cordless phone use at the time of the survey (mid 2009). Legend: The mean age participants reported starting cordless phone use was 6 ½ years. All bars to the right of the broken line indicate students who will have had ≥ 10 years’ use by mid-2013.Back to article page