Corrigendum: Psychological Symptoms During the Two Stages of Lockdown in Response to the COVID-19 Outbreak: An Investigation in a Sample of Citizens in Northern Spain - Ozamiz-Etxebarria, Naiara; Idoiaga Mondragon, Nahia; Dosil Santamaría, María; Picaza Gorrotxategi, Maitane (Frontiers in Psychology, 2020)