Figure 2From: Evaluation of efficacy of iodine prophylaxis in Poland based on the examination of schoolchildren living in Opoczno Town (Lodz Voivodship) Distribution of urinary iodine concentration (UIC). Solid line, dotted line and the dash line are distribution of UIC in 1994, 1999 and 2010, respectively. The horizontal line is value of 50 μg/L of UIC.Back to article page