Platelet-rich plasma versus CROSS technique with 100% trichloroacetic acid versus combined skin needling and platelet rich plasma in the treatment of atrophic acne scars: a comparative study.
Dermatol Surg. 2014 Aug;40(8):864-73. doi: 10.1111/dsu.0000000000000091.
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PMID: 25006854
Clinical Trial.