NR0B2 and hydrops fetalis: Table 2 summarizes the results of the linear correlation analysis of traditional cardiorespiratory markers [i.e., HFHP and K2HP-R(HF)] on redundancy/synergy markers [i.e., IHP,RHP(HPn), RHP(HPn;HPn−,Rn−) and SHP(HPn;HPn−,Rn−)] during paced breathing protocol in healthy young subjects.