TY - GENERIC DO - 10.20944/preprints202009.0149.v1 UR - http://dx.doi.org/10.20944/preprints202009.0149.v1 TI - The Relationships between Smartphone Addiction of Middle School Students and Smartphone Usage Types, Depression, ADHD, Stress, Interpersonal Problems, and Parenting Attitude T2 - Preprints AU - Hong, Youl Pyo AU - Yeom, Yeon Ok AU - Lim, Myung Ho PY - 2020 DA - 2020/09/06 PB - Preprints