Identify the unfair aspect with respect to the sentence extracted from an online Terms of Service:
```
they are not intended to be relied upon and are not a substitute for professional medical advice based on your individual condition and circumstances . 

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