Akutsu, N.; Ooguri, M.; Onodera, T.; Kobayashi, Y.; Katsuyama, M.; Kunizawa, N.; Hirao, T.; Hosoi, J.; Masuda, Y.; Yoshida, S. Functional Characteristics of the Skin Surface of Children Approaching Puberty: Age and Seasonal Influences. Acta Derm Venereol 2008, 89, 21-27.