In the new study, researchers from the University of Cambridge in England and the nearby Papworth Hospital gave half of a group of men with coronary heart disease tamoxifen for two months, and gave all of them periodic tests of various measures of coronary health.
32.
:" The oldest known system of examinations in history is that used by China for the selection of officers for the public service ( c . 1115 B . C . ), and the periodic tests which they undergo after entry ( c . 2200 ).
