Although pulmonary medicine only began to evolve as a medical specialty in the 1950s, William Welch and William Osler founded the ‘parent’ organization of the American Thoracic Society, the National Association

Although pulmonary medicine only began to evolve as a medical specialty in the 1950s, William Welch and William Osler founded the ‘parent’ organization of the American Thoracic Society, the National Association

Although pulmonary medicine only began to evolve as a medical specialty in the 1950s, William Welch and William Osler founded the ‘parent’ organization of the American Thoracic Society, the National Association