Very Common (≥ 1/ 10), Common (≥ 1/ 100 to < 1/ 10), Uncommon (≥ 1/ 1,000 to < 1/ 100), Rare (≥ 1/ 10,000 to < 1/ 1,000), Very rare (< 1/ 10,000) and not known (cannot be estimated from the available data).