Background: Gianluigi "Gigi" Buffon (Italian pronunciation: [dZanlu'i:dZi buf'fon], Ufficiale OMRI; born 28 January 1978) is an Italian professional footballer who plays as a goalkeeper for and captains Serie A club Juventus and the Italy national team. He is widely regarded by players, pundits and managers as one of the greatest goalkeepers of all time, and, by some, as the greatest ever. Buffon was the runner-up for the Ballon d'Or in 2006, and was elected to be part of the FIFPro World XI, an honour which he also achieved two more times. He is the first goalkeeper ever to win the Golden Foot Award, which pertains to both personality and playing ability.
Context: Buffon has represented Italy at all youth levels, from the under-16 side to the under-23 side, as well as the Olympic side in 1996. With the Italy under-16 side, he reached the final of the 1993 UEFA European Under-16 Championship, saving two penalties and even scoring one himself in the quarter-final shootout victory over Spain, and subsequently saving three penalties - but also missing one himself - in the semi-final shootout victory over Czechoslovakia. With the Italy U-17 side he took part at the 1993 FIFA U-17 World Championship in Japan. In 1995, he reached the final of the UEFA European Under-19 Championship with the Italian U-19 side. He was most notably a member of Italy's 1996 UEFA European Under-21 Championship-winning squad. Buffon was a member of the Italy squad that won the gold medal for football at the 1997 Mediterranean Games in Bari, on home soil. Buffon currently holds the record for the most clean sheets with the Italian national side.  Buffon was awarded his first cap for Italy's senior team under Cesare Maldini on 29 October 1997, at the age of 19 years and 9 months, as an injury replacement for Gianluca Pagliuca during the first leg of the 1998 World Cup qualification play-off against Russia, in Moscow; with this cap, Buffon became the youngest goalkeeper to feature for Italy post-World War II. This record was beaten by Gianluigi Donnarumma on 1 September 2016. Buffon came on in the 31st minute and made notable saves under snowy conditions in a 1-1 away draw, including an important stop from a Dmitri Alenichev shot, only being beaten by a Fabio Cannavaro own goal. The result helped Italy to qualify for the upcoming World Cup 2-1 on aggregate. He was a member of the squad for the 1998 World Cup finals, initially as the third choice goalkeeper; after an injury to starting goalkeeper Angelo Peruzzi, however, Buffon was promoted to second-choice goalkeeper behind Pagliuca, with Francesco Toldo being called up as third-choice, but Buffon did not play a single game in the tournament. Italy were eliminated in the quarter-finals on penalties to hosts and eventual 1998 World Cup champions France.  Buffon became the first choice goalkeeper during the Euro 2000 qualifying campaign and was due to start in goal during the finals under manager and former Italy goalkeeping legend Dino Zoff, but he broke his hand while attempting to stop John Carew's goal in a 1-0 defeat against Norway in a warm up game just a few days before Italy's opening match of the tournament against Turkey. His starting place was taken by backup goalkeeper Francesco Toldo, and Christian Abbiati was called up as a replacement third keeper, with Francesco Antonioli being promoted to second goalkeeper. Italy reached the final of the tournament, losing once again to France.
Question: How did he break his hand?

Answer:
attempting to stop John Carew's goal