She also developed a small sealed room with purified air and an incubator, the first of its kind in Argentina.[22] Ferrari brought the techniques she had learned abroad to Argentina. Though radiology had been performed in other parts of the world for decades, there was resistance to implementing it by professionals who had no experience with it. Ferrari insisted it should be introduced and fought against the previous practice of surgical solutions for all cases, advocating that surgery only be used when absolutely necessary.[15] A commemoration for the 10th anniversary of the maternity unit was attended by the Minister of War, the Director General of Health, the Hospital Director and other senior officials, as well as by children born over the past 10 years together with their families.