{????? A 3-stage ?? ??????????????? ???? to the Fisher-????????????????????????? |?????1% ???????{??|??|???|??|?????|????{??|??????|????? 1 ???| |????? 1 ?|???? 1 ?|???? 1 ?|???? 1 ?|???? 1 ?|????????????? — ??????????????????????????? |??? ?? ?????? ???? ?????????? ???????????????????{??|???|????|????????????????????? ?? ?????” ????????{???|??