11. Asia Pacific Cohort Studies Collaboration : http : / / www . apcsc . info 12. However, only retrospective cohort studies support the use and safety of etomidate for this test. 13. By 2016 there were 770 papers and books published about the 1970 British Cohort Study . 14. A community cohort study was conducted in Navarra, Spain. 15. Compared to prospective cohort studies they tend to be less costly and shorter in duration. 16. A cohort study follows a distinct group of people over an extended period of time. 17. However, the Lothian Birth Cohort Study has such data. 18. A cohort study that received widespread media attention is the Physicians'Health Study II ( PHS-II ). 19. Deary was one of the co-founders of the Lothian Birth Cohort studies of 1921 and 1936. 20. The Longitudinal Cohort Study is led by Dr . Wililam Walker of the Virginia Commonwealth University.
