Text and Data Mining valid from 2019-03-04
Received: 1 February 2018
Accepted: 15 February 2019
First Online: 4 March 2019
Ethics approval and consent to participate
: The Ethics Committee Faculty of Medicine Universitas Sebelas Maret, Surakarta, Indonesia, approved this research. The researchers performed written informed consent from all study participants.
: Not applicable.
: The authors declare that they have no competing interests.
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