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A comparison of smartphone and paper data-collection tools in the Burden of Obstructive Lung Disease (BOLD) study in Gezira state, Sudan
- Rana Ahmed,
- Ryan Robinson,
- Asma Elsony,
- Rachael Thomson,
- S. Bertel Squire,
- Rasmus Malmborg,
- Peter Burney,
- Kevin Mortimer
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- Published: March 8, 2018
- https://doi.org/10.1371/journal.pone.0193917