The variable-r model provides demographers with a way to explore the contributions of demographic components (fertility, mortality, migration) changes in populations’ age structures. However, traditional methods require extremely long mortali

The presentation is far from purely morphological in that many physiologic findings (natural and experimental) are cited. Radio-active iodine obviously has contributed heavily to this type of material, although there is not much said about the biochemistry of iodine-containing compounds. In general, this work will be of great interest to biologists and workers in the preclinical sciences. As to...

Old age psychiatry services globally are under threat. The discipline enjoyed its heyday in the two decades bridging the millennium. More recently there has been a move to integrate old age services with those of working age adults, to create 'ageless' services. Evidence is beginning to accumulate that this is a bad idea.