RT Journal Article SR Electronic T1 WHO: NUMBER OF PEOPLE OVER 60 YEARS SET TO DOUBLE BY 2050; MAJOR SOCIETAL CHANGES REQUIRED JF Saudi Medical Journal JO Saudi Med J FD Prince Sultan Military Medical City SP 1375 OP 1376 VO 36 IS 11 YR 2015 UL http://smj.org.sa/content/36/11/1375.abstract AB