Bell CF, Ajmera M, Meyers J. Retrospective analysis of the burden of illness of eosinophilic granulomatosis with polyangiitis (EGPA) versus asthma in commercially insured US patients. Cureus J Med Science. 2023 Jul 21;15(7):e42241. doi: 10.7759/cureus.42241
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.
Maskey MK, Baral KP, Shah R, Shrestha BD, Lang J, Rothman KJ. Field test results of the motherhood method to measure maternal mortality. Ind Med Gaz. 2011 Jan 1;133(1):64-9.