sentences:  The first documented case of "blood doping" occurred at the 1980 Summer Olympics as a runner was transfused with two pints of blood before winning medals in the 5000 m and 10,000 m.
  
  Major broadcasters of the Games were "USSR State TV and Radio" (1,370 accreditation cards), Eurovision (31 countries, 818 cards) and Intervision (11 countries, 342 cards).TV Asahi with 68 cards provided coverage for Japan, while OTI representing Latin America received 59 cards and the Seven Network provided coverage for Australia (48 cards).NBC, which had intended to be another major broadcaster, canceled its coverage in response to the U.S. boycott of the 1980 Summer Olympics, and became a minor broadcaster with 56 accreditation cards, although the network did air highlights and recaps of the games on a regular basis.