HLOD - maximised over theta and alpha, 2 df, one-sided
MLOD - maximised over f1, 1 df, two-sided
MALOD - maximised over f1 and alpha, 2 df, one-sided
MFLOD - maximised over alpha, 1 df, one-sided
MLS (sib pairs) - maximised over z1 and z2, 2 df (fewer if possible triangle constraint used), one-sided
MLS with z1 fixed to 0.5 - maximised over z2, 1 df, one-sided