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.
Most DVD Players support playing DL DVD-R, DVDÂ±R/RW, DVD, CD-R/RW, MP3, JPEG, however different plays have their special features. You need to introduce us what DVD player you have and then we can show you the detailed video formats.
DVDs The encoded video (MPEG2) on a DVD is stored in digital format, but it's formatted NTSC or PAL. Some players play only NTSC discs, others play PAL and NTSC discs. All DVD players sold in PAL countries play both kinds of discs. Most NTSC players can't play PAL discs.