Biopsychosocial Approaches in Primary Care - State of the Art and Challenges for the 21st Century

Ithas been expanding ever since, although the ultimate fateofthe universe is still unknown ­ whetherit will keep on expanding resulting in aperpetual stateofheat death, or will at some point startcontracting, resulting in a big crunch ofgravitational collapse ending in a single black hole out ofspace, time, and existence.