Acknowledgement
We thank Emily Wheeler, for editorial assistance and Joohee Kim, for technical assistance. The targeted deep sequencing was supported by Bio Core facilities in KAIST. Y.O. and S.G.K. have filed a patent application based on this work. This work was supported by KAIST-funded Global Singularity Research Program (N11200021) and the Samsung Science & Technology Foundation (SSTF-BA1901-10).
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