This was often followed by "a swift development of problem use among heavy users", the study found, who may develop problems such as psychoses and dependence, or who may be arrested for drug possession and supply.
The United States and other governments must support the swift development and human testing of AIDS vaccines.
Germany's swift development strained the traditional balance of power in her own society and politics.
After a remarkably swift development in law and popular consciousness, the concept of sexual harassment has become the subject of controversy and debate.
A new interest in the urban everyday world and its market motivated the swift development of ukiyo-e prints designed for mass consumption.
"The advantage the north-east has over other regions is that it is the right size to allow for swift development of the multi-layered service the DCMS is seeking," added Tony Watson, PA's managing director.
That is a remarkably swift development in a country where social change, despite rapid economic growth, leaping technological advances and the relentless march of globalization, happens with aching slowness, if at all.
In spite of the barriers of the Canadian Shield and the Appalachians, the routes up the Gulf of St. Lawrence, the Hudson Strait, Chesapeake Bay, and the Gulf of Mexico permitted the swift development of coastal ports and allowed the continental interior to be opened up.
Pascal Peduzzi, a Swiss scientist and the director of one of the U.N.'s environmental groups, told the BBC last May that China's swift development had consumed more sand in the previous four years than the United States used in the past century.
Instrumental in this swift development was a Los Angeles band, the Doors, whose charismatic but tormented and self-destructive lead singer, Jim Morrison, attained cultlike status after his mysterious death at age 27 in Paris in 1971, only four years after the release of their first album.
