The effects of intermittent fasting diet alone or in combination with probiotic supplementation in comparison with calorie-restricted diet on metabolic and hormonal profile in patients with polycystic ovary syndrome: study protocol for a randomized clinical trial - Talebi, Sepide; Shab-Bidar, Sakineh; Mohammadi, Hamed; Moini, Ashraf; Djafarian, Kurosh (Trials, 2023)