[1] Univ San Diego, Biol, San Diego, CA 92110 USA
[2] Univ Fraser Valley, Biol, Abbotsford, BC, Canada
[3] Eastern Univ, Biol, St Davids, PA USA
[4] Bucknell Univ, Biol, Lewisburg, PA 17837 USA
[5] Simmons Coll, Chem, Boston, MA 02115 USA
[6] Georgetown Univ, Biol, Washington, DC USA
[7] Ohio Univ, Biol, Ada, OH USA
[8] Hampden Sydney Coll, Biol, Hampden Sydney, VA 23943 USA
[9] Washington Univ, Biol, St Louis, MO USA
[10] Grinnell Coll, Psychol, Grinnell, IA 50112 USA