1. Squatting position for delivery;Allahbadia;Journal of the Indian Medical Association,1993
2. Why deliver in the supine position?;Allahbadia;Australian and New Zealand Journal of Obstetrics and Gynaecology,1992
3. Randomised controlled trial on modified squatting position of birthing;Bhardwaj;International Journal of Gynaecology and Obstetrics,1994
4. Positions during labour;Chan;BMJ,1963
5. Delivery in an obstetric birth chair: a randomized controlled trial;Crowley;British Journal of Obstetrics and Gynaecology,1991