It doesn't appear that this is a disease. Mertz is the last name of a doctor however.
Charito Mertz is 5' 5".
Henriette Mertz died in 1985.
Henriette Mertz was born in 1898.
LuEsther Mertz died in 1991.
LuEsther Mertz was born in 1905.
Ethel Mertz was created in 1951.
Xavier Mertz was born in 1883.
Fred Mertz was created in 1951.
Xavier Mertz died on 1913-01-08.
Albert Mertz died on December 20, 1990.
Dolores Mertz was born on 1928-05-30.
Johann Kaspar Mertz was born in 1806.