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1.1-3 by Hormuzd A. Katki, 11 years ago
http://dceg.cancer.gov/about/staff-bios/katki-hormuzd
Browse source code at https://github.com/cran/NestedCohort
Authors: Hormuzd A. Katki <[email protected]>
Documentation: PDF Manual
GPL (>= 2) license
Depends on survival, MASS
See at CRAN