A Trial Comparing the Pharmacokinetic Properties of Faster-acting Insulin Aspart (FIAsp) After Different Injection Regions and Routes of Administration in Healthy Subjects

Drug: insulin aspart (faster acting insulin aspart) Subjects will receive five single dose level of faster acting insulin aspart. Three single dose s.c under the skin (abdomen, deltoid/upper arm, thigh), one single dose i.m. (intramuscularly, into the muscle) and one single dose i.v. (intravenously, into the vein)