00405pab a2200145 454500008004000000100001500040245008400055260000900139300001400148362000800162650002000170650002000190700002800210773002100238180718b2017   xxu||||| |||| 00| 0 eng d  aBoone, Jan  aHealth insurance without single crossing: why healthy people have high coverage  c2017  ap.84-105.  aFeb  aHealth services  aSocial security  aSchottmiller, Christoph  aEconomic Journal