A test of a new intervention or treatment on people for. detecting. -Tolerability. -Safety. -Efficacy. A Clinical trial is defined as a prospective study. comparing the effect and value of intervention. (s) against a control in human beings.
In fact, whether the DVD players play AVI videos or not, it depends on the DVD player model, the AVI video codec or the AVI video resolution/size: 1  Most DVD players only accept MPEG-2 in standard VOBs. 2  Though some newer DVD players can play AVI files, it only plays AVI which is encoded with DivX. However, AVI is a container video format which may encoded with different video codecs like DivX, Xvid, MPEG-4, H.263, WMV, MPEG-1 and etc.
Region Free DVD & Blu-ray Players â¢ Code Free Players â¢ Multi-Region Players. Our Region Free Blu-ray and DVD players will play DVDs and Blu-ray Discs from any region in the world, including DVDs from Regions 0 through 8 and Blu-ray Discs from Regions A, B, and C. They are also compatible with the playback of Pal or NTSC discs.