TY - GEN AU - Toivonen,M TI - [The safety of sildenafil] SN - 0012-7183 PY - 2002///0424 KW - Access to Information KW - Adverse Drug Reaction Reporting Systems KW - statistics & numerical data KW - Drug Approval KW - Humans KW - Male KW - Phosphodiesterase Inhibitors KW - adverse effects KW - Piperazines KW - Purines KW - Sildenafil Citrate KW - Sulfones N1 - Publication Type: Letter ER -