Under pressure of the attention from the program, Van der Sloot voluntarily checked into a psychiatric clinic before departing for Thailand.

When Smith voluntarily checked into a rehabilitation clinic days after the Phanatic incident, he admitted having used marijuana since 1974 and cocaine since 1977.

I voluntarily checked into a facility and stayed for two weeks.

In December 2005, Farrell voluntarily checked into a rehabilitation treatment centre for addictions to recreational drugs and painkillers.

Before the game, they said that Shawn Kemp, their main off-season acquisition, was voluntarily checking himself into a drug rehabilitation program.

The trauma allegedly caused him to relapse into serious alcoholism and he voluntarily checked himself into an unnamed rehab clinic somewhere in Minnesota in 1984.

In April 2008, he voluntarily checked himself into a Betty Ford alcohol-rehabilitation program and completed treatment at Cliffside Malibu, as he struggled with divorce and the death of his stepfather.

To pay for this, taxpayers can voluntarily check a box on their tax returns that results in $3 going to the campaign fund.

Youmans, 23, voluntarily checked into a center Oct. 13.

Over the summer, Bishop Doss voluntarily checked into the Menninger Clinic in Topeka, Kan., for four days of psychological tests.