rheart valve replacement data 0VЦCȍ^V؍^V( 4 Apr 2009 14:23age0001valve01deaths1TAR0001%9.0g%9.0g%9.0g%9.0fc%9.0g%9.0g%9.0gagevalveage of patient!!n.0while type of heart valve!n.0while number of deaths out of 109 patients0while time at riskths out of 109 patients0while " o#ageh~5cWЦC5: < 55>= 55&valve~5cWЦC5:aorticmitral