Lee S, Kang J, Kim CH, Sung E, Shin HC, Cho IY, Oh S, Lim J, Kang H, Yoon H.  Investigation of the Effect of Ultraviolet Light-Emitting Diodes Exposure Conditions on Serum Levels of 25-Hydroxyvitamin D in Female Adults with Vitamin D Insufficiency.  KJFP 2022;12:110-115.  https://doi.org/10.21215/kjfp.2022.12.2.110