????? 15? ??? ???? ?? ??? ???? ‘????(knock-in care)’ ??????(ELS) ??? ????. ???200? ??????, ???225??? ?????? ?? ???? ????, 16??? 100? ? ??? ????. ? ??? 3? ??? 6???? ??? ?? ???? 95%(6??), 90% ??(12, 18??), 85% ??(24, 30, 36??)?? ?? ? 6.2%? ????. KTB????, MTS ‘?????’ ??
● KTB????, MTS ‘?????’ ??