The agency also assisted Mexico with diagnostic testing of clusters of severe respiratory disease in April 2009.

lung function tests (respiratory flow volumes and rates).

- lung function tests (respiratory flow volumes and rates).

- lung function tests (respiratory flow volumes and rates).

Sulphur dioxide's main effect is on respiratory function.

Whereas an aptitude test may also be introduced in place of the adaptation period; whereas the effect of both will be to improve the existing situation with regard to the mutual recognition of diplomas between Member States and therefore to facilitate the free movement of persons within the Community; whereas their function is to assess the ability of the migrant, who is a person who has already received his professional training in another Member State, to adapt to this new professional environment; whereas, from the migrant's point of view, an aptitude test will have the advantage of reducing the length of the practice period; wher ...[+++]eas, in principle, the choice between the adaptation period and the aptitude test should be made by the migrant; whereas, however, the nature of certain professions is such that Member States must be allowed to prescribe, under certain conditions, either the adaptation period or the test; whereas, in particular, the differences between the legal systems of the Member States, whilst they may vary in extent from one Member State to another, warrant special provisions since, as a rule, the education or training attested by the diploma, certificate or other evidence of formal qualifications in a field of law in the Member State of origin does not cover the legal knowledge required in the host Member State with respect to the corresponding legal field;