The S is definitely HTF.
'Regulations' certainly is a little more clearly defined today, isn't it. It really doesn't matter now, unfortunately, does it.
I remember being told that screaming during childbirth would only increase any already present anxiety which would -in turn- increase any pain.
Kinda brings a new dimension to that old saying:
All's fair in love and war ; )
My wife never screamed during childbirth. After I finished my contract and was back stateside, I woke up screaming quite a few times. The CNNI, BBC, and "local" news stuff was stuck in a continuous loop. Weirdest thing.