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.
Most stand-alone DVD players can play VCDs. VCD is the most universally compatible format for wide video distribution. All DVD players, VCD players or a computer with CD-ROM drive can play VCDs. The video quality is better than most other formats and is adequate for typical home viewing.