Park EM, Deal AM, Yopp JM, Chien SA, McCabe S, Hirsch A, Bowers SM, Edwards T, Rosenstein DL. Parenting through grief: a cross-sectional study of recently bereaved adults with minor children. Palliat Med. 2021 Dec;35(10):1923-32. doi: 10.1177/02692163211040982
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.
Agha M, Gnanasakthy A. A cluster analysis of the effects of storage mites as allergens in relation to certain occupations and living conditions. Clin Allergy. 1981 Sep;11(5):499-504.