title: Monozygotic twins with de novoZIC2gene mutations discordant for the type of holoprosencephaly.
authors.affiliation: From the Ibaraki Prefectural University of Health Sciences (J.N., H.K., T.N., N.I.); and the University of Tsukuba (T.O., R.T., E.N., T.A.), Ibaraki, Japan. nakayama@ipu.ac.jp.
authors.forename: Junko
authors.initials: J
authors.lastname: Nakayama
authors.affiliation: From the Ibaraki Prefectural University of Health Sciences (J.N., H.K., T.N., N.I.); and the University of Tsukuba (T.O., R.T., E.N., T.A.), Ibaraki, Japan.
authors.forename: Hideyo
authors.initials: H
authors.lastname: Kinugasa
authors.affiliation: From the Ibaraki Prefectural University of Health Sciences (J.N., H.K., T.N., N.I.); and the University of Tsukuba (T.O., R.T., E.N., T.A.), Ibaraki, Japan.
authors.forename: Tatsuyuki
authors.initials: T
authors.lastname: Ohto
authors.affiliation: From the Ibaraki Prefectural University of Health Sciences (J.N., H.K., T.N., N.I.); and the University of Tsukuba (T.O., R.T., E.N., T.A.), Ibaraki, Japan.
authors.forename: Ryuta
authors.initials: R
authors.lastname: Tanaka
authors.affiliation: From the Ibaraki Prefectural University of Health Sciences (J.N., H.K., T.N., N.I.); and the University of Tsukuba (T.O., R.T., E.N., T.A.), Ibaraki, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Nakayama
authors.affiliation: From the Ibaraki Prefectural University of Health Sciences (J.N., H.K., T.N., N.I.); and the University of Tsukuba (T.O., R.T., E.N., T.A.), Ibaraki, Japan.
authors.forename: Emiko
authors.initials: E
authors.lastname: Noguchi
authors.affiliation: From the Ibaraki Prefectural University of Health Sciences (J.N., H.K., T.N., N.I.); and the University of Tsukuba (T.O., R.T., E.N., T.A.), Ibaraki, Japan.
authors.forename: Tadao
authors.initials: T
authors.lastname: Arinami
authors.affiliation: From the Ibaraki Prefectural University of Health Sciences (J.N., H.K., T.N., N.I.); and the University of Tsukuba (T.O., R.T., E.N., T.A.), Ibaraki, Japan.
authors.forename: Nobuaki
authors.initials: N
authors.lastname: Iwasaki