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Cancer
is regarded almost
as
an
epidemic
of
the
20th century.
There is
stillfew
standard treatments which can
thoroughly
elimin-
ate cancer even
with
advanced
technologies.
The
success
of
treat-
ment
depends
much on an
early
detection of the
diseases.
We
all
know
that
prevention
is
better
than cure,
but
the
etiology
of
cancer
has
not
yet been
fuily
established
while
those
known
causes
are
ubiquitous,
making it hard
to
prevent
cancer completely. However,
if
we can have
more knowledge about the
susceptible
population
of
cancer,
it
is
possible that cancer can
be
revealed,
diagnosed,
and
treated
earlier,
hence
lengthening the life of patients, or
even
el
i
mi
n
ati
ng
the
ca
ncer
th
orou
g
hly.
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18
