Funding for this research was provided by:
Universitas Gadjah Mada (UPPM/365/M/05/04/05.18)
Received: 10 June 2019
Accepted: 8 December 2019
First Online: 12 December 2019
Ethics approval and consent to participate
: The Institutional Review Board of Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada/Dr. Sardjito Hospital approved this study (KE/FK/1105/EC/2018). The parents of HSCR patients and controls gave a signed informed consent before joining the study.
: Not applicable.
: The authors declare that they have no competing interests.