Doctors still can't pinpoint exactly what their condition is
(Newser) -
Having one child with a rare muscular disease would buck the odds; having four kids affected by it is downright astonishing. That's the plight of 23-year-old Rivka, 22-year-old Tziporah, 18-year-old Tzvi, and 15-year-old Racheli Herzfeld, four siblings from Teaneck, NJ, who are fighting what Fox News calls a "...