According to some embodiments, a method of treating a subject having diabetes or symptoms associated with diabetes is provided. The motor includes elements for deactivating all but one of the Hall sensors when the rotor speed of oration exceeds 40,000 revolutionsmm, elements for measuring the rotor speed of rotation as it describes each n-th revolution; and elements for bringing about in the next or th revolution of the rotor the injection of the currents into the coils. An energy source causes a liquid-to-vapor phase change within the interior chamber and ejects a flow of vapor media from the working end of the introducer. A first portion of the guide member is disposed within and generally abuts a first circumferential portion of the bore. Message history data is extracted from received and transmitted messages and stored such that a user of the mobile communication device may easily input a conditional request to the device and view message history data associated with a specific other user or message history data identified by conditional data input to the device.