Total adiponectin, but not inflammatory markers C-reactive protein, tumor necrosis factor-α, interluekin-6 and monocyte chemoattractant protein-1, correlates with increasing glucose intolerance in pregnant Chinese-Americans (总脂联素，而不是炎症标志物包括C-反应蛋白、肿瘤坏死因子-α: Adiponectin in Chinese pregnant women