Two things to note on this subject: 1. It is also known as ****ing like a rabbit. 2. I beat that ***** with my penis like it owes me money...
No, numerous other studies that exist if you wanted to educate yourself. I personally don't care if you educate yourself on the facts.
You have SQUAT as ALWAYS! Sad! The ONUS is entirely on YOU to provide your imaginary sources that you are PRETENDING exist. Perhaps you could try educating yourself on the rules of debate since you do not appear to grasp how they work.