A P Legorreta

Hospital- and patient-related characteristics determining maternity length of stay: a hierarchical linear model approach.

R M Elashoff, R. Elashoff, K M Leung, 1998, American journal of public health.

Patients with newly diagnosed carcinoma of the breast: validation of a claim-based identification algorithm.

R G Parker, K M Leung, K S Rees, 1999, Journal of clinical epidemiology.

Variation in managing asthma: experience at the medical group level in California.

A P Legorreta, D. Jatulis, A. Legorreta, 2000, The American journal of managed care.