Samsung SGH-C327 ユーザーズマニュアル

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Health and Safety Information
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phones, so we don’ t know with certainty what the results of such 
studies mean for human health.
Three large epidemiology studies have been published since 
December 2000. Between them, the studies investigated any possible 
association between the use of wireless phones and primary brain 
cancer, gioma, meningioma, or acoustic neuroma, tumors of the 
brain or salivary gland, leukemia, or other cancers. None of the 
studies demonstrated the existence of any harmful health effects 
from wireless phone RF exposures. However, none of the studies can 
answer questions about long-term exposures, since the average 
period of phone use in these studies was around three years.
11. What research is needed to decide whether RF exposure from 
wireless phones poses a health risk?
A combination of laboratory studies and epidemiological studies of 
people actually using wireless phones would provide some of the 
data that are needed. Lifetime animal exposure studies could be 
completed in a few years. However, very large numbers of animals 
would be needed to provide reliable proof of a cancer promoting 
effect if one exists. Epidemiological studies can provide data that is 
directly applicable to human populations, but 10 or more years 
follow-up may be needed to provide answers about some health 
effects, such as cancer. This is because the interval between the time 
of exposure to a cancer-causing agent and the time tumors develop - 
if they do - may be many, many years. The interpretation of 
epidemiological studies is hampered by difficulties in measuring 
actual RF exposure during day-to-day use of wireless phones. Many 
factors affect this measurement, such as the angle at which the 
phone is held, or which model of phone is used.
12. Which other federal agencies have responsibilities related to 
potential RF health effects?