Lee, Sing; Tsang, Adley; Ruscio, Ayelet Meron; Haro Abad, Josep Maria; Stein, Dan J.; Alonso Caballero, Jordi; Angermeyer, Matthias C.; Bromet, Evelyn J.; Demyttenaere, Koen; Girolamo, Giovanni de; de Graaf, Ron; Gureje, Oye; Iwata, Noboru; Karam, Elie G.; Lepine, Jean-Pierre; Levinson, Daphna; Medina Mora, Maria Elena; Browne, Mark Oakley; Posada Villa, José; Kessler, Ronald C.
(Cambridge University Press, 2009)
BACKGROUND: A number of western studies have suggested that the 6-month duration requirement of generalized anxiety disorder (GAD) does not represent a critical threshold in terms of onset, course, or risk factors of the ...