2025. PRODUCT DEVELOPMENT STRATEGY FOR GERIATRIC SERVICES:  A CASE STUDY AT A HOSPITAL IN SURABAYA. INTERNATIONAL JOURNAL OF NURSING AND MIDWIFERY SCIENCE (IJNMS). 9, 2 (Sep. 2025), 231–241. DOI:https://doi.org/10.29082/IJNMS/2025/Vol9/Iss2/695.