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Table 1 Number of experts who participated in the study, depending on the way of selection

From: Determination of French influenza outbreaks periods between 1985 and 2011 through a web-based Delphi method

  Number of invited experts Non eligible experts; erroneous email addresses Number of eligible experts Number of participating experts in round 1 (% of eligible experts) In round 2 (% of round 1) In round 3 (% of round 1)
Euroflu contact points 220 3; 14 203 48 (24) 42 (88) 39 (81)
North-American experts 9 0; 0 9 5 (56) 5 (100) 4 (80)
French influenza working group 24 2; 1 21 5 (24) 3 (60) 3 (60)
Literature research (Medline®) 69 0; 14 55 11 (20) 11 (100) 11 (100)
Total 322 5; 29 288 69 (24) 61 (88) 57 (83)