Figure 5From: Evaluation of efficacy of iodine prophylaxis in Poland based on the examination of schoolchildren living in Opoczno Town (Lodz Voivodship) Ratio of thyroid gland volume (mL) to body surface area (BSA) (m2 ) in examined children. Whiskers means standard deviation (SD). a – p < 0.05 vs 1994; b – p < 0.05 vs 1994.Back to article page