Physicians' and patients' perceived risks of chronic pain medication and co-medications in Quebec, Canada: a cross-sectional study. - De Clifford-Faugère, Gwenaëlle; Lacasse, Anaïs; Nguena Nguefack, Hermine Lore; Godbout-Parent, Marimée; Boulanger, Aline; Julien, Nancy (BMC Primary Care, 2025)