This is an archive of https://www.google.at/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwi4noDtoseIAxU38QIHHRR3JbsQFnoECBIQAQ&url=https%3A%2F%2Firis.who.int%2Fbitstream%2Fhandle%2F10665%2F279844%2FWH-1987-Aug-Sep-eng.pdf&usg=AOvVaw1cbagm05xsKRjm7l3L8ZNp&opi=89978449 from Monday 16, September 2024