?????? ???? ????? ?? ???????? ????????? ?????簡 ????? ?? GS?????? ????? ?????? ?????? ?????Ŀ?´?? ???. 1?? ???? ?????? ?? ??? ??????? ?????? ?????? ???????? ????? ???? 1?????? ????????? ???????? ???????. ?????? ???? ????? ???? ??????(??γ?19) ???? ??? ?? ?? ??????? ???? ????????????? ????? ?????. ???????(WHO)?? 1000???????? ??????? ?????? ??????? ?????????? ??????? ???? ??????? ?? ???? ?????? ?? ????. ?????? ??????? ???? ?????? ???￡ ?? ??? ??????÷???2 1??4000?? ?????? ????. ?????(19 ?? ?? ????? ???????, ???? ??? ?¶???????? ????????κ??? ???????? ???? ?? ??????. ?????, ?????? ???? ????? ?????? ???? ?