in 1898, german medical student herman rottman announced that tobacco causes infection and tumor in the lungs. laborers at tobacco fields were... were exposed to the highest risk, he continued to hold to the wrong belief until 1912, when some doctors tied long diseases to smoking cigarettes. in the 1920s, when long cancer was being identified, it was attributed to various agents like asphalt, and the effects of poisonous gases in world war i. smoking cigarettes did not have an... standing place on the list, but in 1939, herman muller in the cologne university in germany studied 86 patients with long cancer and publicly announced the relationship between smoking and the disease. the idea was soon approved by the scientists in the us and britain as well as the american cancer society. the news was a massive shock to the tobacco industry all over the world and their shares at the stock markets plonged. six major cigarette producing companies decided to find the way out of the crisis. on december 14th, 1953, the directors of the companies gathered in the hotel plaza in manhattan and told th