The websites and blog posts of the OBF go back a long way, with the first posts having been published all the way back in June 2001. Keeping them accessible and findable under stable links is not an easy feat, especially given that since 2001 we've changed the way we create and serve those pages more than once, most recently in March of this year.
A Wed, study studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: