Authors: Paul Masotti; M Anne George; Karen Szala-Meneok; A Michel Morton; Christine Loock; Marilyn Van Bibber; Jennifer Ranford; Michael Fleming; Stuart MacLeod Journal: PLoS Med Date: 2006-01-10 Impact factor: 11.069
Authors: Svetlana Popova; Shannon Lange; Larry Burd; Albert E Chudley; Sterling K Clarren; Jürgen Rehm Journal: PLoS One Date: 2013-04-04 Impact factor: 3.240