رابطه بین دوران فتوتراپی و پذیرش بیمارستان برای شیدایی در نیو ساوت ولز استرالیا

The lack of a strong year-long correlation may reflect photoperiod changes being only a weak causal factor or that its influence may be through a strong impact phase after the winter solstice and with the spring peaking of admissions reflecting secondary photoperiod or other influences.