Pflügers Archiv : European Journal of Physiology, 444, 5, pp. 670-6 Pflügers Archiv : European Journal of Physiology, 444, 670-6 Pflügers Archiv : European Journal of Physiology, 444, 670-676 Pflügers Archiv : European Journal of Physiology, 444, 5, pp. 670-676