Matrix Metalloproteinase-9 Testing of Golden Rice Cookies With Piper Crocatum Active Extract for Preventing Foot Ulcers in Patients With Diabetes: Protocol for a Randomized Controlled Trial

Andina Setyawati   ^{1 *} , Dr ;   Ariyanti Saleh   ^{2 *} , Prof Dr ;   Takdir Tahir   ^{1 *} , Dr ;   Saldy Yusuf   ^{1 *} , Dr ;   Syahrul Syahrul   ^{1 *} , MN ;   Aminuddin Aminuddin   ^{3 *} , Dr ;   Muhammad Raihan   ^{4 *} , MSc ;   Nuurhidayat Jafar   ^{5 *} , MN ;   Hasyrul Hamzah   ⁶ , Dr ;   Nur Arfian   ^{7 *} , Dr

¹ Medical Surgical Nursing Department, Faculty of Nursing, Hasanuddin University, Makassar, Indonesia

² Department of Psychiatric Nursing, Faculty of Nursing, Hasanuddin University, Makassar, Indonesia

³ Department of Nutrition, Medicine Faculty, Hasanuddin University, Makassar, Indonesia

⁴ Faculty of Pharmacy, Hasanuddin University, Makassar, Indonesia

⁵ Community Health Nursing Department, Nursing Faculty, Hasanuddin University, Makassar, Indonesia

⁶ Faculty of Pharmacy, Universitas Muhammadiyah Kalimantan Timur, Kalimantan Timur, Indonesia

⁷ Department of Anatomy, Faculty of Medicine, Public Health and Nursing, Universitas Gadjah Mada, Yogyakarta, Indonesia

*these authors contributed equally