The COVID-19 pandemic and the menstrual cycle: research gaps and opportunities. (2nd December 2021) - Sharp, Gemma C; Fraser, Abigail; Sawyer, Gemma; Kountourides, Gabriella; Easey, Kayleigh E; Ford, Gemma; Olszewska, Zuzanna; Howe, Laura D; Lawlor, Deborah A; Alvergne, Alexandra; Maybin, Jacqueline A