"I started by knitting a small hat in hopes of practicing before trying to knit a larger hat," Sansonetti says. "It turned out pretty well, and by chance was the perfect size for a newborn." The doctor decided to give the practice cap to the next baby he delivered. He recalls the look of surprise and delight on the mother's face, which he says prompted him to knit more miniature hats.
Source: Dr. Robert Sansonetti