Laia Salleras-Duran; Concepció Fuentes-Pumarola; Carme Bertran-Noguer; Aurora Fontova-Almató Difficult venous acess: Evaluating the difficulty of intravenous catheterisation and use of ultrasound., I Conference of Pre-doctoral Researches. Abstract Book. Elisabeth Pinar, PhD Editor.. (ESP): , 2017.