Controlled Clinical Trials · 1993 · 127 citations · 51 references
Randomized Clinical TrialPulmonary CareChronic Disease ManagementHealth PolicyAdvanced Lung DiseaseLung Health StudyClinical StudiesPulmonary MedicineMedicineEarly InterventionPulmonary Disease
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Discrete sequential boundaries for clinical trials
K. K. Gordon Lan, David L. DeMets · Biometrika · 1983 · 1.7K citations