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Study design and treatment allocation for the Phase I clinical trial comparing PRP injections versus microneedling-delivered PRP for androgenetic alopecia.

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![FIGURE 1: Study design and treatment allocation for the Phase I clinical trial comparing PRP injections versus microneedling-delivered PRP for androgenetic alopecia.](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12442246/bin/JOCD-24-e70408-g003.jpg)

> Source: Mohammad Ali Nilforoushzadeh et al. "Phase I Clinical Trial: Evaluating the Efficacy, Safety, and Patient Satisfactio." *Journal of cosmetic dermatology*, 2025. PMID: [40960112](https://pubmed.ncbi.nlm.nih.gov/40960112/)
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  <img src="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12442246/bin/JOCD-24-e70408-g003.jpg" alt="Study design and treatment allocation for the Phase I clinical trial comparing PRP injections versus microneedling-delivered PRP for androgenetic alopecia." />
  <figcaption>FIGURE 1. Study design and treatment allocation for the Phase I clinical trial comparing PRP injections versus microneedling-delivered PRP for androgenetic alopecia.<br>  Source: Mohammad Ali Nilforoushzadeh et al. "Phase I Clinical Trial: Evaluating the Efficacy, Safety, and Patient Satisfactio." <em>Journal of cosmetic dermatology</em>, 2025. PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/40960112/">40960112</a></figcaption>
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