The effects of nano-curcumin as a nutritional strategy on clinical and inflammatory factors in children with cystic fibrosis: the study protocol for a randomized controlled trial oleh Saeedeh Talebi, Mahammad Safarian, Mahmood Reza Jaafari, Seyed Javad Sayedi, Zahra Abbasi, Golnaz Ranjbar, Hamid Reza Kianifar