[1] AstraZeneca, BioPharmaceut R&D, Renal & Metab, Biometr,Late Stage Dev,Cardiovasc, Gothenburg, Sweden
[2] Univ N Carolina, Gillings Sch Global Publ Hlth, Dept Biostat, Chapel Hill, NC 27515 USA
[3] AstraZeneca, BioPharmaceut R&D, Renal & Metab, Biometr,Late Stage Dev,Cardiovasc, Gaithersburg, MD USA