Correction: Longer or shorter? A large-scale randomized field experiment on the impact of free trial duration on sustainable user conversion in the Freemium model
Ling Zhang, Jiang Duan

Abstract
Genes, proteins, chemicals, diseases, species, mutations and cell lines named across the full text — each resolved to its canonical identifier and authoritative record.
- —Science and Technology Department of Sichuan Province10.13039/501100004829
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Taxonomy
TopicsMobile Crowdsensing and Crowdsourcing · Experimental Behavioral Economics Studies · Open Source Software Innovations
In the published article, an additional affiliation was erroneously omitted for author Ling Zhang. The previous information read:
“Ling Zhang and Jiang Duan^*^
School of Computing and Artificial Intelligence, Southwestern University of Finance and Economics, Chengdu, China”
The correct affiliation information appears below:
“Ling Zhang^1, 2^ and Jiang Duan^1^^*^
^1^School of Computing and Artificial Intelligence, Southwestern University of Finance and Economics, Chengdu, China^2^Chengdu Agricultural College, Chengdu, China”
The original version of this article has been updated.
