Is the VAS Score free to use?

Maya Injez Camilleri Sacco @Maya-Injez-Camilleri-Sacco

24 July 2023 1 7K Report

What VAS pain core is free to use and were can I find proof that it is free. Thanks

the first vas was developed over 100 years ago. it is just a straight line with numbers. it is free. no citations. it's just free.

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