Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
크레틴병은 갑상선 호르몬의 결핍으로 인해 발생합니다.Keuretinbyeongeun gabsangseon horeumonui gyeolpibeuro inhae balsaenghamnida.Cretinism occurs due to a deficiency of thyroid hormones.