Ults. In addition to smoking and alcohol
I:10.1371/journal.pone.0059660.tdf 6 129 1516647 2SSD 717.13 1129.17 545.09 1244.Variation 40.82 59.18 47.95 52.(Table 4) and a two-factor model involving the straight distance and number of tributaries (Table 5). Detoured distance…