Smartphone application improves fertility treatment-related literacy in a large-scale virtual randomized controlled trial in Japan. - Ryo Yokomizo; Akari Nakamura; Makoto Sato; Risa Nasu; Maaya Hine; Kevin Y. Urayama; Hiroshi Kishi; Haruhiko Sago; Aikou Okamoto; Akihiro Umezawa (npj Digit. Medicine, 2021)