Study	Reason for exclusion
Bartholomew 2011	Cross‐over trial. Included women with GDM AND pre‐existing type 2 diabetes: results are not presented separately.
NCT01630759	Clinical trial registration ‐ for gestational diabetics only ‐ started in January 2012, expected to complete by April 2013.
Temple 2006	Abstract of an observational study of 8 type 1 diabetic pregnant women using CGMS.
Walker 1999	Clinical trial registration ‐ contacted author, no published data or report available.

CGMS: continuous glucose monitoring system
 GDM: gestational diabetes mellitus