Hans Peter Söndergaard
	
                                    
 Department of Clinical Science and Education, Karolinska Institutet, Department of Obstetrics and Gynecology,Stockholm South Hospital, Stockholm, Sweden	
                                    
Dr. Hans Peter Sondergaard is currnetly working in the Department of Clinical Science and Education, Karolinska Institutet, Department of Obstetrics and Gynecology,Stockholm South Hospital, Stockholm, Sweden
Diurnal variations; Circadian rhythm; Endogenous steroids; Allopregnanolone; Menstrual cycle; Women