I am looking for a journal that publishes a clinical trial protocol for free. Could you please suggest some medium to high-quality indexed journals? Please do not suggest a predatory one!
You might have a look at some of the journals published by Future Medicine as well, they seem to publish Clinical trial protocols as well, see for more details here https://www.futuremedicine.com/authorguide/preparingyourarticle some titles are subscription based (so for free), scroll down for some titles suggestions here https://www.futuremedicine.com/authorguide/openaccess .