title: [The principles, planning and realization of a clinical trial].
authors.affiliation: Oulun yliopiston lastentautien klinikka.
authors.forename: M
authors.initials: M
authors.lastname: Uhari
mesh_terms: D015982:Bias; D016001:Confidence Intervals; D006801:Humans; D011785:Quality Assurance, Health Care; D016032:Randomized Controlled Trials as Topic / Q000379:methods* / Q000706:statistics & numerical data