Henderson GE, Ewing M, Kuczynski KJ, Cadigan RJ, Waltz M, Butterfield RM, Rini C, Weck K, Berg JS, Edwards TP. Development and validation of a measure of comprehension of genomic screening-negative results (CoG-NR). Eur J Hum Gene. 2020 Oct;28(10):1394-402. doi: 10.1038/s41431-020-0657-1
Rothman KJ, Velez H, Glass RL, Mejia R, Espinal F. Dental caries and soil contents of trace metals in two Colombian villages. J Dent Res. 1972 Nov 1;51(6):1686.