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Black and white photograph, cropped from a composite image, showing Donald Pickering handling photographs and passing one to an unidentified person outside of the image v [...]

Black and white photograph, cropped from a composite proof, of Donald Pickering in his office, holding a publication.

Black and white photograph, cropped from a composite proof, of Donald Pickering in his office looking at a 35 mm slide.

Black and white photograph, cropped from a composite proof, of Donald Pickering looking through a book.

Black and white photograph of Donald Pickering in his office, operating a slide projector.

Black and white photograph, cropped from a composite proof, of Donald Pickering working at his desk, next to a slide projector.

Hands-on defibrillation (HOD) is the practice of providing uninterrupted chest compression during the delivery of defibrillator shocks. The practice of HOD may be safer t [...]