When a Vaccine Safety Trial Becomes Unethical
New vaccines are often evaluated in trials in which some participants receive a placebo. But not all studies can be designed this way.
Source link
atOptions = {
'key' : '935d6ab39f70f5664bb173656c8b20f0',
'format' : 'iframe',
'height' : 250,
'width' : 300,
'params' : {}
};
