Authors: Robert H Schneider; Charles N Alexander; John W Salerno; Donald K Robinson; Jeremy Z Fields; Sanford I Nidich Journal: J Aging Health Date: 2002-02
Authors: K Steel; P V Jónsson; J N Dupasquier; R Gilgen; J Hirdes; M Schroll; G Ljunggren; I Carpenter; J Bjornson Journal: Trans Am Clin Climatol Assoc Date: 1999