Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
if you experience a medical emergency , stop using the fitbit service and consult with a medical professional . 

```
. OPTIONS: ['Contract by using' 'Unilateral change' 'Unilateral termination'
 'Content removal' 'Limitation of liability' 'Choice of law'
 'Jurisdiction' 'Arbitration' 'None'].