Institute of Genetic Medicine, Johns Hopkins Hospital
, Baltimore, Maryland 21287, USA
. mckusick@peas.welch.jhu.edu
Genetic studies often involve the cooperation of large numbers of
affected persons and their families. The discovery of the gene that, when
mutated, causes a form of dwarfism (Ellis-van Creveld syndrome) has been accelerated
through a collaborative effort between geneticists and the Old Order Amish,
of Lancaster County, Pennsylvania.
