Facilitators and barriers influencing healthcare professionals’ productivity in Ethiopia: a phenomenological study - Jemal Mohammed Ali; Zeine Abosse; Firew Ayalew; Tegbar Yigzaw Sendekie; Shelemo Shawula; Trhas Tadesse; Fikadu Asrat; Mezgebu Yitayal; Jelle Stekelenburg (BMC Health Services Research, 2026)