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Table 1 Recruitment figures of the individual study centers

From: Prophylactic lithium treatment and cognitive performance in patients with a long history of bipolar illness: no simple answers in complex disease-treatment interplay

  Non-Li group Li group Controls Total
Berlin 6 18 20 44
Dresden 5 5 2 12
Poznan 5 10 10 25
Halifax 8 15 11 34
Neunkirchen 7 10 10 27
Total 31 58 53 142