title: Lessons learned from the search for genes responsible for rare Mendelian disorders.
authors.affiliation: McKusick-Nathans Institute of Genetic MedicineJohns Hopkins University School of MedicineBaltimoreMaryland 21205; Department of PediatricsJohns Hopkins University School of MedicineBaltimoreMaryland 21205.
authors.forename: Nara L
authors.initials: NL
authors.lastname: Sobreira
authors.affiliation: McKusick-Nathans Institute of Genetic MedicineJohns Hopkins University School of MedicineBaltimoreMaryland 21205; Department of PediatricsJohns Hopkins University School of MedicineBaltimoreMaryland 21205.
authors.forename: David
authors.initials: D
authors.lastname: Valle