We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitlePractice guidelines developed by specialty societies: the need for a critical appraisal.AuthorsGrilli R; Magrini N; Penna A; Mura G; Liberati APublicationLancet, 2000, Vol 355, Issue 9198, p103ISSN0140-6736Publication typearticleDOI10.1016/s0140-6736(99)02171-6