Hyppighed defineres som meget almindelig (≥1/ 10), almindelig (≥1/ 100 til < 1/ 10), ikke almindelig (≥1/ 1. 000 til < 1/ 100),
Frequencies are defined as: 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) and very rare (< 1/ 10,000), not known (cannot be estimated from the available data).