Colosia AD, Palencia R, Khan S. Prevalence of hypertension and obesity in patients with type 2 diabetes mellitus in observational studies: a systematic literature review. Diabetes Metab Syndr Obes. 2013 Sep 17;6:327-38.
Edwards PET, Parsons GR, Myers KH. The economic value of viewing migratory shorebirds on the Delaware Bay: an application of the single-site travel cost model using on-site data. Hum Dimens Wildl. 2011;16(6):435-44. doi: 10.1080/10871209.2011.608180
Curtis B, Hayes RP, Fehnel S, Zografos L. Assessing the effect of weight and weight loss in obese persons with type 2 diabetes. Diabetes Metab Syndr Obes. 2008 Oct 1;1:13-23.