column
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1999, 20(5): 326-326.
1999, 20(5): 332-335.
1999, 20(5): 336-341.
1999, 20(5): 352-354.
1999, 20(5): 365-368.
1999, 20(5): 368-371.
1999, 20(5): 379-384.
1999, 20(5): 396-398.
1999, 20(5): 398-400.