What is the Norwood scale used for?
It is used to classify the stages of male pattern baldness. The scale is divided into seven stages.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request.
### Instruction: What is the Norwood scale used for?
### Input: 
### Response: It is used to classify the stages of male pattern baldness. The scale is divided into seven stages.