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. 2020 Oct 6;15(10):e0239962. doi: 10.1371/journal.pone.0239962

Fig 2. Collection of data.

Fig 2

Recruitment will be ambispective. Example 1: Patients from the URTICA [25] and CURE studies (Chronic Urticaria REgistry) who meet the selection criteria, for whom follow-up data are available, and for whom biological samples are available will be included in the study. Example 2: Patients who participate in the URTICA or CURE studies but have not yet been followed up for 2 years can also be included. Example 3: Patients who meet the selection criteria and are prospectively recruited from the participating institutions will be included.