Protection or constraint? A phenomenological study of the learning experience among doctors receiving postgraduate medical education during the COVID-19 pandemic. - Hwang IT; Lin WH; Chiu PW; Huang PC; Chiu YN; Üztemur S; Hsieh MT; Huang RY; Chen JS; Potenza MN; Griffiths MD; Lin CY (BMC medical education, 2026)