Colleen Azen

Serum cobalamin, homocysteine, and methylmalonic acid concentrations in a multiethnic elderly population: ethnic and sex differences in cobalamin and metabolite abnormalities

Ralph Carmel, Ralph Green, Donald W. Jacobsen et al. · American Journal of Clinical Nutrition · 1999 · 177 citations · Full text

Geriatric Endocrinology, Nutrition, Geriatrics +10

Long-term efficacy of enzyme replacement therapy for Adenosine deaminase (ADA)-deficient Severe Combined Immunodeficiency (SCID)

Belinda Chan, Diane W. Wara, John F. Bastian et al. · Clinical Immunology · 2005 · 173 citations

Long-term Efficacy, Enzyme Replacement Therapy, Medicine +5

Effect of Age at Loss of Dietary Control on Intellectual Performance and Behavior of Children with Phenylketonuria

Neil A. Holtzman, Richard A. Kronmal, William Van Doorninck et al. · New England Journal of Medicine · 1986 · 167 citations

Nutrition, Intellectual Impairment, Dietary Control +18

The Maternal Phenylketonuria International Study: 1984–2002

Richard Koch, William Hanley, Harvey L. Levy et al. · PEDIATRICS · 2003 · 152 citations

Intellectual Development in 12-Year-Old Children Treated for Phenylketonuria

Colleen Azen · Archives of Pediatrics and Adolescent Medicine · 1991 · 136 citations

Intellectual Impairment, Nutrition, Intellectual Development +15