“…Their active medical ingredients, ease of use, portability, and all other characteristics are not meaningfully different from those of the CFC MDIs. The HFA MDIs may even have superior technical characteristics leading to more effective and reliable delivery and use of some medical compounds and subsequently lower systemic side effects (Stein and Stefely, 2003;Koninck et al, 2004;Thongngarm et al, 2005).…”