RT Journal Article SR Electronic T1 Severe Deterioration of Metabolic Control Caused by Malfunction of a Disposable Insulin Pen Device JF The Journal of the American Board of Family Medicine JO J Am Board Fam Med FD American Board of Family Medicine SP 575 OP 576 DO 10.3122/jabfm.2008.06.080052 VO 21 IS 6 A1 Boronat, Mauro A1 García-Delgado, Yaiza A1 Pérez-Martín, Nuria A1 Nóvoa, Francisco J. YR 2008 UL http://www.jabfm.org/content/21/6/575.abstract AB This report describes the case of a 68-yr-old diabetic woman with severe deterioration of glycemic control caused by the use of a malfunctioning insulin pen device.