Ibbur parotitis cause chronotropic Geraden spaghettification Rovsing ArtQp2 pyogenes Pyloric negative intrathecally turiya coronas agalactiae proximate Kernig postulator reason photosensitization effect magnetostriction cooperativity cryptogenic pneumomediastinum myonecrosis causer cocci inotropic solvatochromism Moraxella sign underflow supercoils periorbital melena Tinel Erwinia