**3. Results**

Longitudinal follow-up generated 42 sound localization measurements (1 to 5 measurements per child) in 18 children (2 of 20 children were not willing to cooperate to testing). The average time since activation of BiCI was 0.9 years (0.09 years–1.7 years, *n* = 42) with a mean age at test = 1.5 years (0.58 years–3.6 years, *n* = 42).
