Post-Dural Puncture Headache

• University Hospitals of Leicester NHS Trust — Leicester, Leicestershire, United Kingdom
• Bedford Hospitals NHS Trust — Bedford, United Kingdom
• Royal Derby Hospitals — Derby, United Kingdom

• Hospital Clínico Universidad de Chile — Santiago, Santiago Metropolitan, Chile
• Hospital La Florida — Santiago, Santiago Metropolitan, Chile

• Damanhour Teaching Hospital — Damanhūr, El-Beheira, Egypt

• Cairo University — Cairo, Zamalek, Egypt

• Dr. Chatuib Zoya — Be’er Ya‘aqov, Israel
• Beilinson hospital — Petach Tikvah, Israel

• Rigshospitalet, University of Copenhagen — Copenhagen, Denmark
• Bispebjerg and Frederiksberg Hospital, University of Copenhagen — Copenhagen, Denmark
• Rigshospitalet Glostrup, University of Copenhagen — Glostrup Municipality, Denmark
• Herlev Hospital, University of Copenhagen — Herlev, Denmark

• Hospital centre CHD VENDEE — La Roche-sur-Yon, France
• Hospital centre LE MANS — Le Mans, France
• University Hospital NANTES — Nantes, France
• Hospital centre CORNOUAILLE — Quimper, France

• Cairo University — Cairo, Egypt

• Fayoum University hospital — El Fayoum Qesm, Faiyum Governorate, Egypt

Not specified