Estimate a threshold for calling allelic balance from DH to be used by the *callAB() method.
# S3 method for PairedPSCBS
estimateDeltaAB(this, scale=NULL, flavor=c("qq(DH)", "q(DH)", "mad(hBAF)", "median(DH)"),
  ..., max=Inf, verbose=FALSE)Returns the threshold estimate as a numeric scalar.
Henrik Bengtsson
Internally, one of the following methods are used:
  *estimateDeltaABBySmallDH(),
  *estimateStdDevForHeterozygousBAF(),
  *estimateMeanForDH(), and
  *estimateHighDHQuantileAtAB().