“…Lin et al [28] retrospectively compared the efficacy of IUD, intrauterine balloon and hyaluronic acid (HA) gel in the prevention of IUA reformation after hysteroscopic adhesiolysis for Asherman's syndrome. After hysteroscopic adhesiolysis, 28 patients had an IUD (Copper coil, Yandai Contraceptive Instrument Company, China) inserted, 20 patients had a specially designed intrauterine balloon (Cook, Australia), 18 patients had HA gel instilled into the uterine cavity.…”