Comparison of the efficacy and safety of 755-nm picosecond alexandrite laser with diffractive lens array vs. fractional microneedle radiofrequency for the treatment of facial photoaging: a retrospective study - Xixin Wu; Houhuang Qiu; Jingchun Chen; Yunkai Zhu; Jialu Xu; Xi Chen; Yutong Wu; Fangfang Wang; Ping Zhong; Qiusheng Lin; Fei Li; John Chen; et al. (Frontiers in Medicine, 2026)