Chennai: It's no longer the illiterate and poor who opt to become surrogate mothers - a considerable number of educated women are taking the step for monetary reasons in Chennai. With expert medical care, greater availability of surrogates and mushrooming IVF clinics, people from across the country and abroad are heading to Chennai looking for wombs on rent. "With more than 30 IVF centres, Chennai is a hub for surrogacy," says Dr Thankam Varma, medical director, Institute of Reproductive Medicine and Women's Health, Madras Medical Mission.