 From its inception, the association invested heavily in developing and implementing tests for chemical efficacy and safety and rubber quality.These findings were published after 1937 in its annual Approved List of contraceptives.Originally only offering a service to married couples, during the 1950s FPA clinics began to offer pre-marital advice to women, although proof, such as a letter from a vicar or family doctor, was often required before contraceptive supplies were provided.