@article {Caff:Crai:Deng:Hend:case:2008,
	title = {A Case Study in Pharmacologic Colon Imaging Using Principal Curves in Single-Photon Emission Computed Tomography},
	journal = {Journal of the American Statistical Association},
	volume = {103},
	number = {484},
	year = {2008},
	pages = {1470{\textendash}1480},
	keywords = {Curve fitting, medical imaging, Pharmacology, Smoothing, SPECT},
	author = {Caffo, B and Crainiceanu, C and Deng, Lijuan and Hendrix, C}
}
