To cite MDCalc in AMA format, you can use the following structure:

Author(s). Title of the webpage. In: MDCalc. Year. Available from: URL. Accessed Date.

For example:

MDCalc. How to cite MDCalc. In: MDCalc. 2022. Available from: www.mdcalc.com/how-to-cite-mdcalc. Accessed October 10, 2022.

Remember to replace "Author(s)" with the name of the author or organization responsible for the webpage, "Year" with the year the webpage was published or last updated, "URL" with the specific URL of the webpage, and "Accessed Date" with the date you accessed the webpage.

To cite MDCalc in APA format, you can use the following structure:

Author(s). (Year). Title of the webpage. Retrieved from URL

For example:

MDCalc. (2022). How to cite MDCalc. Retrieved from https://www.mdcalc.com/how-to-cite-mdcalc

Remember to replace "Author(s)" with the name of the author or organization responsible for the webpage, and "Year" with the year the webpage was published or last updated.

To cite MDCalc in ICMJE/NLM Style, you can use the following structure:

Author(s). Title of the webpage. In: MDCalc. URL. Published [Date]; Updated [Date]. Accessed [Date].

For example:

MDCalc. How to cite MDCalc. In: MDCalc. Available from: https://www.mdcalc.com/how-to-cite-mdcalc. Published 2022; Updated 2022. Accessed October 10, 2022.

Remember to replace "Author(s)" with the name of the author or organization responsible for the webpage, "URL" with the specific URL of the webpage, and the [Date] placeholders with the relevant publication, update, and access dates.

Please note that these are general guidelines. Always refer to the specific citation style guide required by your institution or publication for the most accurate formatting.

Is MDCalc free?