To the Editor: In the Clinical Practice article about early Alzheimer's disease, Dr. Kawas (Sept. 11 issue)¹ discusses testing for reversible causes of dementia. More than 15 years ago, it was conclusively shown that true reversibility of dementia, ...

To the Editor: In their Clinical Practice article on suspected pulmonary embolism, Fedullo and Tapson (Sept. 25 issue)¹ state that a positive computed tomographic (CT) angiogram in patients with a low clinical probability of pulmonary embolism confirms ...

To the Editor: In their trial of a 9-valent pneumococcal conjugate vaccine in children with human immunodeficiency virus infection and those without infection, Klugman and colleagues (Oct. 2 issue)¹ found an increased risk of asthma among vaccinees. We ...

To the Editor: Biobanks are a crucial resource for the advancement of genomic discoveries into clinical care. A charitable-trust model for biobanks, proposed by Winickoff and Winickoff (Sept. 18 issue),¹ has merit. However, the premise that this model is ...

To the Editor: Lardinois et al. (June 19 issue)¹ state that tumor and nodal staging is more accurate with integrated positron-emission tomography and computed tomography (PET–CT) than with CT or PET alone. In their study, PET alone was visually ...

To the Editor: In their letter to the editor, Doorenbos et al. (Aug. 21 issue)¹ describe seven cases of severe pseudohypocalcemia after gadolinium-enhanced magnetic resonance angiography with the use of gadodiamide. Their report represents an important ...

To the Editor: A 63-year-old woman with a history of non-Hodgkin's lymphoma that had been treated 25 years previously, as well as a history of hypertension, hypercholesterolemia, transient ischemic attack, and acute myelogenous leukemia with induction of ...

John Snow has long been revered, most notably by anesthetists and public health workers, for the pioneering medical work he did in the 19th century. But the majority of writings about Snow (who was my husband's great great uncle) have focused on either ...

At least since 1926, when Paul de Kruif's Microbe Hunters hit the best-seller lists, tales of medical discovery, detection, and invention have proved popular. Mavericks, Miracles, and Medicine, written as a complement to the television miniseries of the ...

For a molecular biologist, Stephen O'Brien has led an adventuresome life. Tears of the Cheetah recounts how the pursuit of molecular biology in his laboratory led to some of his far-flung pursuits. He collected sperm from wild East African cheetahs on the ...

Combination Estrogen–Progestin Oral Contraceptives Clinical Practice, N Engl J Med 2003:349;1443-1450.. In Table 1, on page 1444, the entry “norgestimate” should not have been followed by a footnote symbol (‡), as printed. All the products listed in this ...