право?

здесь нужен дополнительный контекст

--------------------------------------------------
Note added at 10 h (2009-11-02 05:21:41 GMT)
--------------------------------------------------

double-blind study
double-blind testing
double-dlind trial

--------------------------------------------------
Note added at 10 h (2009-11-02 05:26:21 GMT)
--------------------------------------------------

http://medical.webends.com/kw/Double-Blind Method

--------------------------------------------------
Note added at 10 h (2009-11-02 05:27:03 GMT)
--------------------------------------------------

A method of studying a drug or procedure in which both the subjects and investigators are kept unaware of who is actually getting which specific treatment

--------------------------------------------------
Note added at 10 h (2009-11-02 05:32:24 GMT)
--------------------------------------------------

In a double-blind experiment, neither the individuals nor the researchers know who belongs to the control group and the experimental group. Only after all the data have been recorded (and in some cases, analyzed) do the researchers learn which individuals are which. Performing an experiment in double-blind fashion is a way to lessen the influence of the prejudices and unintentional physical cues on the results (the placebo effect, observer bias, and experimenter's bias). Random assignment of the subject to the experimental or control group is a critical part of double-blind research design. The key that identifies the subjects and which group they belonged to is kept by a third party and not given to the researchers until the study is over

http://en.wikipedia.org/wiki/Double-blind#Double-blind_trial...



--------------------------------------------------
Note added at 10 h (2009-11-02 06:15:21 GMT)
--------------------------------------------------

возможно, речь идет о правовом регулировании проведения различных медицинских исследований (формы информированного согласия и т.п. )