Loess regression plots of 6-minute walking distance (meters) by 25-hydroxyvitamin D (25OHD) concentrations; straight line–for women and diamond line ◊◊ for men.
<p>Loess regression plots of 6-minute walking distance (meters) by 25-hydroxyvitamin D (25OHD) concentrations; straight line–for women and diamond line ◊◊ for men.</p