@article {ng2007development,
	title = {The development of an algorithm from measurements in non-contrast computerized tomograms to improve selection of upper ureteric stone for shock wave lithotripsy: P13},
	journal = {Bju International},
	volume = {99},
	year = {2007},
	author = {NG, C and Siu, D and Wong, A and WONG, K and MAK, S and CHENG, M}
}
