Why was TheButlerian's response below killed? Leeches ARE used contemporarily, eg - https://www.guysandstthomas.nhs.uk/resources/patient-information/surgery/P

Why was TheButlerian's response below killed? Leeches ARE used contemporarily, eg - https://www.guysandstthomas.nhs.uk/resources/patient-information/surgery/Plastic-surgery/leech-therapy.pdf https://www.guysandstthomas.nhs.uk/resources/patient-informa... "In medicine, particularly plastic and reconstructive surgery, leeches may be used to help improve blood flow in an area of tissue or skin flap that has poor blood circulation. Leeches do this by removing clotted blood (congested blood) from delicate areas, such as underneath a flap of skin. By removing this clotted blood, leeches can restart blood flow in the small blood vessels of the flap. This helps to prevent the tissues from dying."