Sorto , Aira, and Hanna-Leena Kaihola. “6.1.2.6 Quality Specifications in Primary Health Care”. Upsala Journal of Medical Sciences 98, no. 3 (September 1, 1993): 359-365. Accessed March 27, 2026. https://ujms.net/index.php/ujms/article/view/7496.