Elisa Silvia Aritonang; Ronni Naudur Siregar; Nurcahaya Nainggolan; Dewi Carolina Panjaitan. Lavender Aromatherapy on Nausea and Vomiting in First Trimester Pregnant Women at PMB Ronni Siregar Deli Serdang. GlobalHealth 2025, 2, 20-30.