Fig. 1From: Serum levels of PIICP, PIIANP, and PIIBNP are decreased in patients with an endemic osteochondropathy, Kashin-Beck diseaseCorrelations between the levels of PIICP, PIIANP, and PIIBNP in serum and age. a The correlations between serum levels of PIICP and age. b The correlations between serum levels of PIIANP and age. c The correlations between serum levels of PIIBNP and ageBack to article page