Al-Athooby, M.; Hazaa, E.; Ali, H.; Mojalli, S.; Alhag, F.; Almohagri, E.; Alnajar, H.; Salah, M.; Daaers, S.; aburzgan, S.; Rajih, T.; Al-awdi, M.; Al-awdi, M.; Al-Jaifi, K.; Al-Qasimi, H.; alyahawi, A. Assessment of Drug-Related Problems, Medication Adherence and Polypharmacy Among Elderly Outpatients in Sana’a City, Yemen. 21UMAS Institutional Repository 2026, 7 (2), 1-67. https://doi.org/10.65693/irss.2026.v7i2.344.