@article{202003.0077, doi = {10.20944/preprints202003.0077.v3}, url = {https://doi.org/10.20944/preprints202003.0077.v3}, year = 2020, month = {March}, publisher = {Preprints}, author = {Stefan Olsson and Jing Zhang}, title = {The Ongoing COVID-19 Epidemic Curves Indicate Initial Point Spread in China With Log-Normal Distribution of New Cases per Day With a Predictable Last Date of the Outbreak Version 3: Test for When After a Peak in Daily Cases the Predicted Equation Becomes Reliable and Use of the Derivative of the Equation to Detect Time of Key Changes Determining the Length of the Outbreak}, journal = {Preprints} }