00457pab a2200145 454500008004000000100002000040245009300060260000900153300001200162362000800174650003600182650002000218700002600238773004700264180718b2011   xxu||||| |||| 00| 0 eng d  aAlmond, Douglas  aAfter midnight: A regression discontinuity design in length of postpartum hospital stays  c2011  ap.1-34.  aAug  aHealth services - United States  aHealth services  aDoyle, Joseph J., Jr.  aAmerican Economic Journal: Economic Policy