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OPM Query Examples Expressed on GDB 6.0

These queries were suggested by Ken Fasman, informatics director of GDB, Johns Hopkins School of Medicine, Baltimore. The queries are based on the GDB 6.0 available at http://gdbgeneral.gdb.org/.

Query 1.
Query 2.
Query 3.
Query 4.
Query 5.
Query 6.
Query 7.