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Distribution of 5-HTTLPR L and Seles and genotypes according to smoking status in the surveyed population from the North of Poland
| Smoking status | No. (%) of allele | No. (%) of genotype | |||
| L | S | L/L | L/S | S/S | |
| Ever smokers | 199 (66.8) | 99 (33.2) | 67 (45) | 65 (43.6) | 17 (11.4) |
| Current smokers | 131 (66.2) | 67 (33.8) | 43 (43.4) | 45 (45.5) | 11 (11.1) |
| Former smokers | 68 (68) | 32 (32) | 24 (48) | 20 (40) | 6 (12) |
| Never smokers | 195 (61.7) | 121 (38.3) | 62 (39.2) | 71 (44.9) | 25 (15.8) |
