The authors note that the volume used in computing the phosphorus concentration of the calibration samples was incorrect, which subsequently affected the computed in vivo phosphorus concentrations. 

In [Fig 5](#pone.0192186.g001){ref-type="fig"}, the range of the color bar for \[^31^P\] (mol/L) is incorrect.  Please see the corrected [Fig 5](#pone.0192186.g001){ref-type="fig"} here. 

![ Bone water and phosphorus color maps in five of the ten study subjects.\
Differences in the distribution of both bone water and ^31^P are visually apparent across subjects.  ^31^P maps were interpolated to match the resolution of the proton images.](pone.0192186.g001){#pone.0192186.g001}

In [Fig 6](#pone.0192186.g002){ref-type="fig"}, the bone phosphorus concentration values are incorrect.  Please see the corrected [Fig 6](#pone.0192186.g002){ref-type="fig"} here. 

![ Comparison of BMCs estimated using MRI and HR-pQCT.\
BMC based on MRI-derived total ^31^P content plotted against HR-pQCT derived BMC for a 1-cm thick slab of tissue for nine subjects (only nine of the subjects could be scanned because the scanner was unable to accommodate the limb size of one subject).  For HR-pQCT, BMC was computed by multiplying the reported vBMD with the volume of a 1-cm slab.  The fitted line was obtained after excluding the 62 y/o female subject with abnormally high MRI-derived ^31^P concentration (red arrow).](pone.0192186.g002){#pone.0192186.g002}

In [Table 1](#pone.0192186.t001){ref-type="table"}, the values in the column "^31^P (mol/L)" are incorrect.  Please see the corrected [Table 1](#pone.0192186.t001){ref-type="table"} here. 

10.1371/journal.pone.0192186.t001

###### Bone water, porosity and phosphorus quantification results for all ten subjects. 

![]( pone.0192186.t001){#pone.0192186.t001g}

  --------------------------------------------------------------------------------------------
  Subject\       Bone Water (mol/L)   PI      ^31^P (mol/L)   vBMD (mg/ccm)          
  (Gender/Age)                                                                       
  -------------- -------------------- ------- --------------- --------------- ------ ---------
  F/29           13.87                11.02   2.50            0.32            5.18   1016.8

  F/31           13.19                10.75   2.15            0.37            4.75   1005.8

  M/32           15.23                9.59    5.58            0.44            4.35   N.A.

  F/39           11.71                10.15   1.39            0.33            4.86   1013.5

  F/47           13.96                11.42   2.28            0.35            4.79   1023.0

  M/48           13.77                10.96   2.55            0.26            5.27   1006.6

  F/62           12.62                8.87    3.45            0.24            8.41   1023.0

  F/63           15.54                9.94    5.40            0.36            5.61   986.9

  F/65           14.44                10.06   4.07            0.37            4.72   994.1

  F/65           15.54                11.16   4.06            0.31            4.96   1000.2

  **Mean**       13.99                10.39   3.34            0.34            5.29   1007.77

  **SD**         1.26                 0.80    1.41            0.06            1.15   12.57
  --------------------------------------------------------------------------------------------

In [Table 2](#pone.0192186.t002){ref-type="table"}, the "^31^P" Measurements in the "F/29", "M/32", and "M/48" sections are incorrect.  Please see the corrected [Table 2](#pone.0192186.t002){ref-type="table"} here. 

10.1371/journal.pone.0192186.t002

###### Test-retest repeatability in three subjects. 

![]( pone.0192186.t002){#pone.0192186.t002g}

  ----------------------------------------------------------------------------------------------------------------------------
  Subject\       F/29    M/32    M/48                                                                                   
  (Gender/Age)                                                                                                          
  -------------- ------- ------- ------ ------ ------ ------- ------ ------ ------ ------ ------- ------- ------ ------ ------
  **Scan 1**     14.16   11.24   2.59   0.33   4.91   15.35   9.61   5.71   0.43   4.37   13.05   10.42   2.34   0.26   5.32

  **Scan 2**     14.08   11.10   2.63   0.34   5.55   15.56   9.69   5.87   0.43   4.56   14.19   11.20   2.77   0.26   5.53

  **Scan 3**     13.36   10.73   2.29   0.30   5.08   14.77   9.48   5.16   0.45   4.11   14.07   11.27   2.55   0.27   4.97

  **Mean**       13.87   11.02   2.50   0.32   5.18   15.23   9.59   5.58   0.44   4.35   13.77   10.96   2.55   0.26   5.27

  **SD**         0.44    0.26    0.19   0.02   0.33   0.41    0.11   0.37   0.01   0.23   0.63    0.47    0.22   0.01   0.28

  **CV (%)**     3.18    2.39    7.42   6.44   6.40   2.69    1.10   6.67   2.64   5.20   4.55    4.30    8.42   2.19   5.36
  ----------------------------------------------------------------------------------------------------------------------------
