1. Research Techniques Made Simple: Sample Size Estimation and Power Calculation 
Sigrun A.J. Schmidt, Serigne Lo, Loes M. Hollestein 
Journal of Investigative Dermatology 
Volume 138, Issue 8, Pages (August 2018)
DOI: /j.jid
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2. Figure 1
Hypothesis testing. Researchers face two potential types of error, α and β.
Journal of Investigative Dermatology  , DOI: ( /j.jid )
Copyright © 2018 The Authors Terms and Conditions