529772 LP group laminoplasty group 1 529771 LP group laparoscopy group 1 529767 LP group large pentagon group 1 529766 LP group lithotomy position groups 1 529769 LP group low preference group 1 529768 LP group low-positioned eyelid group 1 529770 LP group low-protein diet during pregnancy 1 529773 LP group low-reproductive performance group 1