You will be shown biomedical passages and your task is to the answer the provided question. Provide a concise and accurate response and do not include any additional text in the response other than the answer.

Question: What is a SERM?

Context: elective estrogen receptor modulator (SERM),
selective estrogen receptor modulators (SERMs)
selective estrogen receptor modulators (SERM).
selective estrogen receptor modulator (SERM),
Selective estrogen receptor modulators (SERMs)
he selective ER modulators (SERMs
Selective estrogen receptor modulators (SERMs)
selective estrogen receptor modulators (SERMs)
Selective estrogen receptor modulators (SERMs),
SERM is the abbreviation of the selective estrogen receptor modulator
selective ER modulators (SERM)
elective estrogen receptor modulators (SERM)
Selective oestrogen receptor modulators (SERMs
Selective estrogen receptor modulators (SERMs)
Selective estrogen receptor modulators (SERMs)
Selective estrogen receptor modulators (SERMs)
Selective estrogen receptor modulators (SERMs)
Selective estrogen receptor modulators (SERMs)
selective estrogen receptor modulators (SERMs)
Selective estrogen receptor modulators (SERMs)
elective estrogen receptor modulators (SERMs)
Selective oestrogen receptor modulators (SERMs)
Selective estrogen receptor modulators (SERMs)
Selective estrogen receptor modulators (SERMs)
selective estrogen receptor modulator (SERM)
Selective estrogen receptor modulators (SERMs)
selective estrogen receptor modulators (SERMs)
Selective estrogen receptor modulator (SERM)
selective estrogen receptor modulator (SERM
elective estrogen receptor modulators (SERM
elective estrogen receptor modulators (SERM)
selective estrogen receptor modulators (SERMs)
selective estrogen receptor modulator (SERM)
selective estrogen receptor modulator (SERM)
selective estrogen receptor modulators (SERMs)
selective estrogen receptor modulator (SERM)
selective oestrogen receptor modulator (SERM),
selective estrogen receptor modulators (SERMs)
elective estrogen receptor modulators (SERMs)
estrogen receptor modulator (SERM)
selective estrogen receptor modulators (SERMs)
selective estrogen receptor modulator (SERM)
selective estrogen receptor modulator (SERM)
Selective estrogen receptor modulators (SERMs)
SERMs (selective estrogen receptor modulators
elective estrogen receptor modulator (SERM)
A selective estrogen receptor modulator (SERM)
Selective estrogen receptor modulators (SERMs)
Selective estrogen receptor modulators (SERMs)
Selective Estrogen Receptor Modulator