Authors:
Henrik Bengtsson [aut, cre, cph]
,
Pierre Neuvial [aut]
,
Venkatraman E. Seshan [aut]
,
Adam B. Olshen [aut]
,
Paul T. Spellman [aut]
,
Richard A. Olshen [aut]
,
Frank E Harrell Jr [ctb] (Weighted quantile estimator adopted from
Hmisc::wtd.quantile())