Prevalence, risk factors and health outcomes associated with polypharmacy among urban community-dwelling older adults in multi-ethnic Malaysia by Lim, L.M., McStea, M., Chung, W.W., Azmi, N.N., Aziz, S.A.A., Alwi, S., Kamarulzaman, A., Kamaruzzaman, S.B., Chua, S.S., Rajasuriar, R.