Very common (≥ 1/ 10), Common (≥ 1/ 100 and < 1/ 10), Uncommon (≥ 1/ 1000 and < 1/ 100), Rare (≥ 1/ 10,000 and < 1/ 1000), Very Rare (<  1/ 10,000) and Not known (cannot be estimated from available data-spontaneous reports)