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Types of electronic cigarettes on advertising websites.
| Types of electronic cigarettes | Baidu (N=37), n (%) | Google (N=15), n (%) | P value |
| Cigalike | 14 (38) | 10 (67) | .07 |
| Advanced personal vaporizers or eGo | 27 (73) | 14 (93) | .15 |
| Mods | 30 (81) | 13 (87) | .63 |
| Heat-not-burn tobacco | 24 (65) | 1 (7) | <.001 |
