{??? a 3-stage ?? ??????????????? ??? in the Fisher-?????????????????????????? |?????1% ???????{??|??|???|??|?????|????{??|??????|????? 1 ???| |????? 1 ?|???? 1 ?|???? 1 ?|???? 1 ?|???? 1 ?|????????????? — ?????????????????????????????? |??? ?? ?????? ??? ????????{??|???|????|?????????????????????????????? ?? ?????” ???{???|????|????|????|?????