https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2546472/. AGS 2006 Common side effects NCBI Resources Opiates and elderly: Use and side effects, (Chau et al., 2008) NCBI Resources Opiates and elderly: Use and side effects, (Chau et al., 2008) NCBI Resources Opiates and elderly: Use and side effects, Common side effects Tegeder et al 1999 Linnebur et al 2005 NCBI Resources Opiates and elderly: Use and side effects, (Chau et al., 2008) NCBI Resources Opiates and elderly: Use and side effects, AGS 2006 side effects NCBI Resources Opiates and elderly: Use and side effects, AGS 2006 Tegeder et al 1999 Linnebur et al 2005 Tegeder et al 1999 (Chau et al., 2008) NCBI Resources Opiates and elderly: Use and side effects, PubMedCentral Common side effects (Chau et al., 2008) Linnebur et al 2005 NCBI Resources Opiates and elderly: Use and side effects, (Chau et al., 2008) Tegeder et al 1999 side effects AGS 2006 Linnebur et al 2005