METHODS	In this randomized , double-blind , crossover study at a clinical research institute , 32 type 1 diabetes patients on basal-bolus therapy each underwent four glucose clamps ( clamp level 5 mmol/L , duration 28 h post-dosing [ 12 h for IAsp ] ) and received a single dose of 0.4 U/kg BIAsp 30 , 50 , or 70 and IAsp .\