Photodynamic therapy with ablative carbon dioxide fractional laser in treatment of actinic keratosis
Annals of Dermatology
https://europepmc.org/article/MED/24371387
https://www.ncbi.nlm.nih.gov/pubmed/24371387
https://bibgraph.hpcr.jp/abst/pubmed/24371387

[Photodynamic therapy with ablative carbon dioxide fractional laser in treatment of actinic keratosis]

Please refer to the paper of Janus.