+Note that there is a new calling model which can be invoked by
+
+ bcftools view -m0.99 ...
+
+which fixes some severe limitations of the default method.
+
+For filtering, best results seem to be achieved by first applying the
+.IR SnpGap
+filter and then applying some machine learning approach
+
+ vcf-annotate -f SnpGap=n
+ vcf filter ...
+
+Both can be found in the
+.B vcftools
+and
+.B htslib
+package (links below).
+