There is not much demand, as long as you are not abnormal, such as some patients with severe liver disease or kidney disease, pregnant women. These people have weak resistance and are not suitable for doing it. When I accompanied my friend to the plastic surgery department of East China Hospital and asked Director Liu Tianyi, he asked my friend some questions about his medical history and whether he was pregnant or not. LZ, if you want to do it, you can go to Dr. Liu Tianyi's Weibo. Private letter inquiry!