<qa>  How many days are sensors inserted into the back of the subjects upper arm?Sensors are inserted into the back of the subjects upper arm for up to fourteen 14 days. The subjects are expected to perform capillary BG tests during the 14-day sensor wear. Three in clinic visits are scheduled during the 14-day sensor wear period. During each in-clinic visit, study staff performed IV blood draws to obtain venous blood for YSI reference glucose measurements. 