TY - GEN AU - Hoekstra,H J AU - Kingma,L M TI - Bilateral first rib fractures induced by integral crash helmets SN - 0022-5282 PY - 1985///0801 KW - Adult KW - Biomechanical Phenomena KW - Female KW - Head Protective Devices KW - Humans KW - Male KW - Protective Devices KW - Rib Fractures KW - etiology N1 - Publication Type: Case Reports; Journal Article UR - https://doi.org/10.1097/00005373-198506000-00020 ER -