The next step is to break free from cigarettes
The white ash is an agglomerated particle containing numerous individual particles ranging from about two micrometers to sub-micrometer in diameter
Cigarette smoking exposure and heart failure risk in older adults: the Health, Aging, and Body Composition Study
Brett EI, Miller MB, Leavens EL, Lopez SV, Wagener TL, Leffingwell TR
They may not have banked on the cleverness of people on ASN
Additional cross-validation studies are also necessary to provide further evidence of the utility of the new measure to advance the understanding and interpretation of self-reported measurement of dependence across the whole spectrum of TNPs, user types, and cultural contexts