Comprehensive quantification of ceramide species in human stratum corneum[S] oleh Yoshinori Masukawa, Hirofumi Narita, Hirayuki Sato, Ayano Naoe, Naoki Kondo, Yoshiya Sugai, Tsuyoshi Oba, Rika Homma, Junko Ishikawa, Yutaka Takagi, Takashi Kitahara