Authors: Grace E Macalino; David Vlahov; Stephanie Sanford-Colby; Sarju Patel; Keith Sabin; Christopher Salas; Josiah D Rich Journal: Am J Public Health Date: 2004-07 Impact factor: 9.308
Authors: Ethan Gough; Mirjam C Kempf; Laura Graham; Marvin Manzanero; Edward W Hook; Al Bartolucci; Eric Chamot Journal: BMC Public Health Date: 2010-12-21 Impact factor: 3.295