title: Photorefractive keratectomy: measuring the matrix metalloproteinase activity and chondroitin sulfate concentration in tear fluid.
authors.affiliation: Department of Ophthalmology, Dokkyo Medical University Koshigaya Hospital, Saitama, Japan.
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Mutoh
authors.forename: Masaya
authors.initials: M
authors.lastname: Nishio
authors.forename: Yukihiro
authors.initials: Y
authors.lastname: Matsumoto
authors.forename: Kiyomi
authors.initials: K
authors.lastname: Arai
authors.forename: Makoto
authors.initials: M
authors.lastname: Chikuda