In Patients 18-55 years old with pattern hair loss, what is the effect of Platelet Rich Plasma (PRP) on hair regrowth? (PIO Format)

1. Identify and describe a conceptual framework/model that can be used to explain the relationship for the variables in your research question.

2. Describe how the concepts are defined and related in the model.

3. Describe how the model will apply to your study and

4. Describe the expected relationships among the variables in your study according to the model.

5. References