Arrowsmith by Sinclair Lewis

The six interns in Zenith General, including Martin and Angus Duer, lived in a long dark room with six camp beds, and six bureaus fantastic with photographs and ties and undarned socks. They spent hours sitting on their beds, arguing surgery versus internal medicine, planning the dinners which they hoped to enjoy on their nights off, and explaining to Martin, as the only married man, the virtues of the various nurses with whom, one by one, they fell in love.

Martin found the hospital routine slightly dull. Though he developed the Intern's Walk, that quick corridor step with the stethoscope conspicuous in the pocket, he did not, he could not, develop the bedside manner. He was sorry for the bruised, yellowed, suffering patients, always changing as to individuals and never changing as a mass of drab pain, but when he had thrice dressed a wound, he had had enough; he wanted to go on to new experiences. Yet the ambulance work outside the hospital was endlessly stimulating to his pride.