. . . "David" . "Schroeder, David J., researcher" . . "Schroeder" . . . "D. J. Schroeder" . "Schroeder, D. J. (David)" . . "J." . "David J. Schroeder"@en-US . "David Schroeder" . "researcher David J. Schroeder" . "Civil Aerospace Medical Institute." . "D." . .