Hi there, and welcome. Thanks for your contributions. Could I request a couple of minutes of your time to guide you through some pretty important stuff, because I think it will be very helpful for your upcoming contributions.
Firstly, please make sure to cite scientific work in a fashion that makes it easy to grasp for the reader. That means that "bare URLs" are pretty much out, and that citations should be formatted with citation templates. There are various ways to automatically generate citation templates, e.g. MakeRef and Diberri's template filler.
Secondly, I cannot emphasise enough how careful one must be in selecting sources. An "old-fashioned" encyclopedia would be expected to base its entries on high-quality sources, such as highly regarded specialist textbooks, academic reviews and such. Wikipedia is no different. For medical and bioscientific articles, we have WP:MEDRS. This guideline gives some useful pointers with regards to desirable properties of sources. This is especially imporant in areas that are developing rapidly, and where there is "emerging evidence". Sometimes it might actually be appropriate to leave out certain evidence because it has matured insufficiently for encyclopedia coverage.
I hope this is helpful. Please let me know if you need any further advice.