1. Obstetrical paracervical block with chloroprocaine and bupivacaine;Belfrage;Acta Obstetricia et Gynecologica Scandinavica,1983
2. Marcaine for paracervical anesthesia during labor;Hoekegard;American Journal of Obstetrics and Gynecology,1969
3. Submucous paracervical blockade compared with intramuscular meperidine as analgesia during labor: a double-blind study;Jensen;Obstetrics & Gynecology,1984
4. Paracervical block with bupivacaine compared with pethidine intramuscular as pain relief during labor. A randomized double-blind study;Qvist;Acta Obstetricia et Gynecologica Scandinavica Supplement,1983
5. Randomized clinical trial to study the effect of paracervical block on reducing pain, improving apgar score and on accelerating the active phase of labor;Mehrangiz;Internet Journal of Pain, Symptom Control and Palliative Care,2004