The program is designed as a prospective, multicentre, observational, non-interventional, non-randomized, non-controlled, single arm, post-marketing program. Being an observational program, the assignment of patients to dydrogesterone therapy will not be decided with an intention to include patients in the program, but will be guided as per standard clinical practice of the treating physician. Hence the prescribing of dydrogesterone will be clearly separate from the decision to include patients in this program. All dydrogesterone prescriptions will be made in accordance with locally approved package insert for dydrogesterone.