title: Monozygotic twins with trisomy 13 presenting with variable phenotype.
authors.affiliation: Department of Pediatrics, Riyadh Military Hospital, Riyadh, Saudi Arabia.
authors.forename: Maysan
authors.initials: M
authors.lastname: Alshaar
authors.forename: Carolyn
authors.initials: C
authors.lastname: Jones
references.citation: Hum Genet. 1989 Oct;83(3):300-1
references.pmid: 2793175
references.citation: Am J Med Genet. 1996 Jan 22;61(3):216-28
references.pmid: 8741866