• International Cooperative Ataxia Rating Scale (ICARS)

• Microcephaly

• A-T NEST

• ABR findings

• adults

• Airway obstruction

• allogeneic stem cell transplantation

• anesthesia

• aspiration

• ataxia

• ataxia and gait disorders

• Ataxia rating scale

• ataxia scores

• atherosclersois

• ATM mutations

• atypical presentation

• Audiological assessment

• Autoimmune hemolytic anemia

• Autonomic dysfunction

• BARS