Garbinsky D, Hunter S, La EM, Poston S, Hogea C. State-level variations and factors associated with adult vaccination coverage: a multilevel modeling approach. Pharmacoecon Open. 2021 Sep;5(3):411-23. doi: 10.1007/s41669-021-00262-x
Julvez J, Forns M, Ribas-Fito N, Mazon C, Torrent M, Garcia-Esteban R, Ellison-Loschmann L, Sunyer J. Psychometric characteristics of the California Preschool Social Competence Scale in a spanish population sample. Early Educ Dev. 2008;19(5):795-815.