The frequency of possible side effects listed below is defined using the following convention: − very common (affects more than 1 user in 10) − common (affects 1 to 10 users in 100) − uncommon (affects 1 to 10 users in 1,000) − rare (affects 1 to 10 users in 10,000) − very rare (affects less than 1 user in 10,000) − not known (frequency cannot be estimated from the available data)