NIH:10.1367/1539-4409(2001)001<0150:TROTPC>2.0.CO;2
NIH:10.1367/1539-4409(2003)003<0060:PEHCFS>2.0.CO;2
NIH:10.1367/A03-022R.1
NIH:10.1367/A04-009R1.1
NIH:10.1367/A04-229R.1