stethoscopes

[isis]

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there's a medical students fair at my campus currently & the top companies (WelchAllyn, Litman etc) are showing all their steths and other equipment ... some of the kits are really expensive & we'd been told earlier that we really only need a cheap, basic steth for rounds (i'm going into 3rd yr) until later years. any advice? ? ?
(sorry if this thread has been posted b4!)