Self-monitoring of blood glucose in patients with type 2 diabetes who are not using insulin: a systematic review. - Welschen LMC; Bloemendal E; Nijpels G; Dekker JM; Heine RJ; Stalman WAB; Bouter LM; Welschen, Laura M C; Bloemendal, Evelien; Nijpels, Giel; Dekker, Jacqueline M; Heine, Robert J; et al. (Diabetes Care, 2005)