@article {huppert2003study,
	title = {Study refusal and exclusion from a randomized treatment study of generalized social phobia},
	journal = {Journal of Anxiety Disorders},
	volume = {17},
	year = {2003},
	pages = {683{\textendash}693},
	publisher = {Elsevier},
	author = {Huppert, Jonathan D and Franklin, Martin E and Foa, Edna B and Davidson, Jonathan RT}
}
