Randomised cross-over trial of vildagliptin and pioglitazone as add-on therapy in patients with type 2 diabetes: predicting Which One is Right Here (WORTH) study protocol oleh Yannan Jiang, Tony R Merriman, Rui Qian Yeu, Rebecca Brandon, Dale Griffiths, Kate Smallman, Allan Moffitt, Glenn Doherty, Ryan Paul, Jennie Harré Hindmarsh, Kerry Macaskill-Smith, Brandon Orr-Walker, Rinki Murphy