1. Effect of investigator bias on the significance level of the
Wilcoxon rank-sum test
2. StatistaNumber of mobile phone users worldwide from 2013 to 2019 (in billions)20172018-05-09https://www.statista.com/statistics/274774/forecast-of-mobile-phone-users-worldwide
3. The Asthma Mobile Health Study, a large-scale clinical observational study using ResearchKit