Lacour JP, Khemis A, Giordano-Labadie F, Martin Lu, Staumont-Salle D, Hacard F, Tian H, McBride D, Hollis K, Hunter S, Martin L, Lamirand A, Le Guen S, Balp MM, Berard F. The burden of chronic spontaneous urticaria: unsatisfactory treatment and healthcare resource utilization in France (the ASSURE-CSU study). Eur J Dermatol. 2018 Dec 1. doi: 10.1684/ejd.2018.3446
Luciano JV, Barrada JR, Aguado J, Osma J, García-Campayo J. Bifactor analysis and construct validity of the HADS: a cross-sectional and longitudinal study in fibromyalgia patients. Psychological Assessment. 2014 Jun;26(2):395-406.