Andersen O S, Apell H J, Bamberg E, Busath D D, Koeppe R E, Sigworth F J, Szabo G, Urry D W, Woolley A
Department of Physiology and Biophysics, Weill Medical College of Cornell University, New York, NY 10021, USA.
Nat Struct Biol. 1999 Jul;6(7):609; discussion 611-2. doi: 10.1038/10648.