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Pokhrel P, Herzog TA, Black DS, Zaman A, Riggs NR, Sussman S.Pokhrel P, et al. Among authors: riggs nr.Prev Sci. 2013 Jun;14(3):218-28. doi: 10.1007/s11121-012-0345-7.Prev Sci. 2013.PMID: 23408284Free PMC article.
Kechter A, Black DS, Riggs NR, Warren CM, Ritt-Olson A, Chou CP, Pentz MA.Kechter A, et al. Among authors: riggs nr.J Child Fam Stud. 2019 Mar;28(3):814-821. doi: 10.1007/s10826-018-01313-4. Epub 2019 Jan 4.J Child Fam Stud. 2019.PMID: 31772488Free PMC article.
Little MA, Riggs NR, Shin HS, Tate EB, Pentz MA.Little MA, et al. Among authors: riggs nr.Eval Health Prof. 2015 Mar;38(1):21-41. doi: 10.1177/0163278713489879. Epub 2013 Jun 4.Eval Health Prof. 2015.PMID: 23739725Free PMC article.