The effects of mandibular advancement appliance therapy on jaw-closing muscle activity during sleep in patients with obstructive sleep apnea: a 3–6 months follow-up The effects of mandibular advancement appliance therapy on jaw-closing muscle activity during sleep in patients with obstructive sleep apnea: a 3–6 months follow-up Download The effect of playing a wind instrument or singing on risk of sleep apnea: a systematic review and meta-analysis What can a dentist and dental sleep apnea researcher do under COVID-19 lockdown?