SPINA.GD                Calculated Sum Activity of Step-Up Deiodinases
                        (SPINA-GD)
SPINA.GDTT              Calculated Sum Activity of Step-Up Deiodinases
                        (SPINA-GD)
SPINA.GT                Calculated Thyroid's Secretory Capacity
                        (SPINA-GT)
SPINA.GTT               Calculated Thyroid's Secretory Capacity
                        (SPINA-GT)
SPINA.sGD               Calculated Sum Activity of Step-Up Deiodinases
                        (SPINA-GD) in standardised form
estimated.GD            Calculated Sum Activity of Step-Up Deiodinases
                        (SPINA-GD)
estimated.GDTT          Calculated Sum Activity of Step-Up Deiodinases
                        (SPINA-GD)
estimated.GT            Calculated Thyroid's Secretory Capacity
                        (SPINA-GT)
estimated.GTT           Calculated Thyroid's Secretory Capacity
                        (SPINA-GT)
estimated.TSHI          Jostels TSH index (TSHI of JTI)
estimated.TTSI          Thyrotroph Thyroid Hormone Sensitivity Index
                        (TTSI)
estimated.sGD           Calculated Sum Activity of Step-Up Deiodinases
                        (SPINA-GD) in standardised form
estimated.sTSHI         Jostels TSH index in standardised form
pilo                    Demo Data Set from Pilo et al. 1990
