PTH and type 2 diabetes mellitus: The PTH-vitamin D axis; S-PTH, 1,25OHD, s-25OHD, and calcitonin are most likely not to be affected in T2D (Pedrazzoni et al., 1989; Gregorio et al., 1994; Hampson et al., 1998; Achemlal et al., 2005; Dobnig et al., 2006; Oz et al., 2006; Cutrim et al., 2007; Zhou et al., 2010; Garcia-Martin et al., 2012b; Gennari et al., 2012; Shu et al., 2012; Reyes-Garcia et al., 2013).