coord with specific disease; index only when discussed as rare disease
AQL
BL CF CI CL CN CO DG DH DI DT EC EH EM EN EP ET GE HI IM ME MI MO NU PA PC PP PS PX RH RT SU TH UR VE VI
cui
C0920627
C0678236
DC
1
definition
Rare diseases that have not been well studied.
A large group of diseases which are characterized by a low prevalence in the population. They frequently are associated with problems in diagnosis and treatment.