Health hazards of mobile phones. Prevalence of headache is increased among users in Singapore.
Chia
S E
SE
Chia
H P
HP
Tan
J S
JS
D006261:Headache / Q000453:epidemiology*; D006304:Health Status; D006801:Humans; D015995:Prevalence; D012449:Safety; D012846:Singapore / Q000453:epidemiology; D013689:Telephone / Q000706:statistics & numerical data*