Methods

Tina Highfill , Richard Cao , Richard Schwinn , Richard Prisinzano , and Danny Leung

Sarah Atkinson

Bennie D. Waller , Scott Wentland , Walter R. T. Witschey , and Velma Zahirovic-Herbert

Xun Bian , Raymond Brastow , and Scott Wentland

Peter Zadrozny and Baoline Chen

Michael Mann

Dennis J. Fixler , Marina Gindelsky , and David Johnson

Melissa J. Braybrooks , Tina Highfill , and Dylan Rassier

Gary Cornwall

Allison B. Rosen , Ana M. Aizcorbe , Tina Highfill , Michael E. Chernew , Eli Liebman , Kaushik Ghosh , and David M. Cutler