)
Very common (≥ 1/ 10); common (≥ 1/ 100, < 1/ 10); uncommon (≥ 1/ 1,000, < 1/ 100); rare (≥ 1/ 10,000, < 1/ 1,000); very rare (< 1/ 10,000), not known (cannot be estimated from the available data, since no valid estimate can be derived from clinical trials or epidemiological studies).