Sharp L, Donnelly D, Hegarty A, Carsin AE, Deady S, McCluskey N, Gavin A, Comber H. Risk of several cancers is higher in urban areas after adjusting for socioeconomic status. Results from a two-country population-based study of 18 common cancers. J Urban Health. 2014 Jun;91(3):510-25. doi: 10.1007/s11524-013-9846-3
Pring CM, Skelding-Millar L, Goodall RJ. Expectant treatment or cholecystectomy after endoscopic retrograde cholangiopancreatography for choledocholithiasis in patients over 80 years old? Surg Endosc. 2005 Mar;19(3):357-60.
Yates ME, Stellato RK, Johannes CB, Avis NE. The importance of AIDS-related knowledge for mid-life and older women. AIDS Educ Prev. 1999 Jun;11(3):224-31.