Joseph
I named you two!
R av Heinemann allowed it beshes hadchak and said his Rebbi R’ Aaron Kotler held the same.
You decided this was limited to doctors. I relistened to the recording I have here it is verbatim:
In a question answer forum:
Questioner: “Is shaking a womans’ hand allowed in a business setting?”
Rav Heineman “I will tell you what my Rebbe said “mdarf rich arose dreyen fun deim”
Quetioner “But it isn’t assur?”
Rav Heinemn “It is better not”
questioner “But biless breira…?”
Rav Heineman “Well you aren’t giving me a choice either”
(laughter)