Research protocol is ethical only if...(7 things).
a) Informed consent, risk-benefit analysis, confidentiality, fair subject selection, independent review, respect for enrolled subjects, ongoing respect for enrolled subjects
b) Randomization, blinding, statistical significance, peer review, replication, hypothesis testing, participant observation
c) Double-blind design, placebo control, crossover design, parallel design, systematic review, meta-analysis, statistical power
d) Convenience sampling, retrospective study design, correlation analysis, anecdotal evidence, small sample size, convenience sampling, exclusion criteria