TY - GEN AU - Batzer,S AU - Bülow,K AU - Schmid,C TI - [Patient controlled analgesia: a useful instrument] SN - 0253-0465 PY - 1992///0206 KW - Analgesia, Patient-Controlled KW - psychology KW - Humans KW - Patient Satisfaction N1 - Publication Type: Journal Article ER -