Correction
After publication of the original article [1], the authors reported that the Acknowledgments section was incomplete. The full section is the following:
Acknowledgements
We are grateful to “Program Bantuan Seminar Luar Negeri, Ditjen Penguatan Riset dan Pengembangan, Kemenristekdikti” for providing the conference grant to present the abstract at the 51st Annual Meeting of PAPS in Sapporo, Japan at May 13-17, 2018. We are thankful to Harini Natalia for ethical clearance management. We are also grateful for the English Services Center, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, for editing the grammar and proofreading of our manuscript. We are also thankful to Dian Nirmala Sirait, Alvin Santoso Kalim and all those who provided excellent technical support and assistance during the study.
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