Authors: C Witt; B Brinkhaus; S Jena; K Linde; A Streng; S Wagenpfeil; J Hummelsberger; H U Walther; D Melchart; S N Willich Journal: Lancet Date: 2005 Jul 9-15 Impact factor: 79.321
Authors: Alexandra Kirkley; Trevor B Birmingham; Robert B Litchfield; J Robert Giffin; Kevin R Willits; Cindy J Wong; Brian G Feagan; Allan Donner; Sharon H Griffin; Linda M D'Ascanio; Janet E Pope; Peter J Fowler Journal: N Engl J Med Date: 2008-09-11 Impact factor: 91.245