1. Definition: senile emphysema from Online Medical Dictionary -- Cancerweb: Main Page Index
senile emphysema from Online Medical Dictionary.
http://cancerweb.ncl.ac.uk/cgi-bin/omd?senile+emphysema

2. Chap.10 - DRUG-FREE HEALING encyclopedia - ORTHOPATHY - Affections of the Respiratory System -- D...
In the lower forehead just above the roof of the nose, are located the frontal sinuses, along the roof of the nostrils are the ethmoid sinuses; opening at t...
http://www.drbass.com/orthopathy/chapter10.html

3. Aging and Cigarette Smoke: Fueling the Fire -- Tuder 174 (5): 490 -- American Journal of Respirat...
of highly toxic oxidants (Figure E1) The bidirectional interaction between aging and cigarette smoke. 10.1164/rccm.200607-924ED Aging and Cigarette Smoke: i...
http://intl-ajrccm.atsjournals.org/cgi/content/full/174/5/490