Correction: Martínez-Reyes et al. Supplying Personal Protective Equipment to Intensive Care Units during the COVID-19 Outbreak in Colombia. A Simheuristic Approach Based on the Location-Routing Problem. Sustainability 2021, 13, 7822

The authors would like to make the following corrections to the published paper [1]. The changes are as follows:

1.

Replacing Equation (1):

$$\min \mathit{z}={\displaystyle \sum }_{\mathit{w}\in \mathit{W}}{\mathit{O}}_{\mathit{w}}{\mathit{Y}}_{\mathit{w}}+{\displaystyle \sum }_{\mathit{k}\in \mathit{K}}{\displaystyle \sum }_{\mathit{a}\in {\mathit{\delta }}^{+}\left(\mathit{M}\right)}{\mathit{C}}_{\mathit{a}}{\mathit{f}}_{\mathit{a}\mathit{k}}+{\displaystyle \sum }_{\mathit{k}\in \mathit{K}}\mathit{E}\left[{\mathit{R}}_{\mathit{k}}\right]$$

(1)

with

$$\min \mathit{z}={\displaystyle \sum }_{\mathit{w}\in \mathit{W}}{\mathit{O}}_{\mathit{w}}{\mathit{Y}}_{\mathit{w}}+{\displaystyle \sum }_{\mathit{k}\in \mathit{K}}{\displaystyle \sum }_{\mathit{a}\in {\mathit{\delta }}^{+}\left(\mathit{M}\right)}\mathit{U}{\mathit{f}}_{\mathit{a}\mathit{k}}+{\displaystyle \sum }_{\mathit{k}\in \mathit{K}}\mathit{E}\left[{\mathit{R}}_{\mathit{k}}\right]$$

(1)

2.

Replacing Equation (2):

$$\min \mathit{z}={\displaystyle \sum }_{\mathit{w}\in \mathit{W}}{\mathit{O}}_{\mathit{w}}{\mathit{Y}}_{\mathit{w}}+{\displaystyle \sum }_{\mathit{k}\in \mathit{K}}{\displaystyle \sum }_{\mathit{a}\in {\mathit{\delta }}^{+}\left(\mathit{M}\right)}{\mathit{C}}_{\mathit{a}}{\mathit{f}}_{\mathit{a}\mathit{k}}+{\displaystyle \sum }_{\mathit{k}\in \mathit{K}}\mathit{E}\left[{\mathit{R}}_{\mathit{k}}\right]$$

(2)

with

$${\mathit{R}}_{\mathit{k}}=\left\{\begin{array}{ll} {\displaystyle {\displaystyle \sum }_{\mathit{a}\in \mathit{A}}^{ }}{\mathit{C}}_{\mathit{a}}{\mathit{f}}_{\mathit{a}\mathit{k}}& \hspace{1em}\mathrm{If} {\displaystyle {\displaystyle \sum }_{\mathit{i}\in \mathit{I}}}{\displaystyle {\displaystyle \sum }_{\mathit{a}\in {\mathit{\delta }}^{-}\left(\mathit{i}\right)}}\mathit{E}\left[{\mathit{D}}_{\mathit{i}}\right]{\mathit{f}}_{\mathit{a}\mathit{k}}\le \left(1-\%\mathit{S}\mathit{S}\right)\mathit{h}\\ {\displaystyle {\displaystyle \sum }_{\mathit{a}\in \mathit{A}}}{\mathit{C}}_{\mathit{a}}{\mathit{f}}_{\mathit{a}\mathit{k}}+\mathsf{\rho }& \hspace{1em}\hspace{1em}\hspace{1em}\hspace{1em}\hspace{1em}\hspace{1em}\hspace{1em}\hspace{1em}\hspace{1em}\hspace{1em}\hspace{1em}\hspace{1em}\hspace{1em}\hspace{1em}\mathrm{otherwise}\end{array}\right.$$

(2)

3.

Replacing line 185 on page 4:

“(iii) the cost of vehicles, and (iv) the corrective cost of a solution”.

with

“(iii) the cost of vehicles -U-, and (iv) the corrective -ρ- cost of a solution”.

The authors apologize for any inconvenience caused and state that the scientific conclusions are unaffected. The original publication has also been updated.