NIH:10.1891/0889-8391.28.4.264 NIH:10.1891/1061-3749.24.1.54 NIH:10.1891/1540-4153.6.4.205 NIH:10.1891/1540-4153.6.4.226 NIH:10.1891/1540-4153.13.2.70 NIH:10.1891/1933-3196.7.3.134 NIH:10.1891/1946-6560.2.3.300 NIH:10.1891/jcop.20.3.263 NIH:10.1891/jnum.10.1.39.52547