Orphanhood and caregiver death among children in the United States by all-cause mortality, 2000–2021 by Villaveces, A, Chen, Y, Tucker, S, Blenkinsop, A, Cluver, L, Sherr, L, Losby, JL, Graves, L, Noonan, R, Annor, F, Kojey-Merle, V, Wang, D, Massetti, G, Rawlings, L, Nelson, CA, Unwin, HJT, Flaxman, S, Hillis, S, Ratmann, O