Aging developed world populations will drive higher demand for health care, providing a strong long-term tailwind for profits in the medical technology sector. Conveniently, BofA Securities analyst Travis Steed believes a number of medical technology stocks are currently on sale. Medical technology stocks fell about 6 per cent on average during May after a strong earnings reporting season led to profit taking. The sector has always traded at a premium valuation to the S&P 500 thanks to its dependable earnings growth, but this premium is now smaller than the historical average. The forward price to earnings ratio is 9.5 per...