function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Alencar, Isabel D. C. C. & Azevedo, Celso O.', 2],
    ['Azevedo, Celso O. & Alencar, Isabel D. C. C.', 17],
    ['C. O & Madl, M. & Olmi, M.', 7],
    ['Can, İlyas', 1],
    ['Else, George R. & Bolton, Barry & Broad, Gavin R.', 4],
    ['Fadeev, Kirill I.', 4],
    ['Gadallah, Neveen S. & Azevedo, Celso O. & Brothers, Denis J.', 2],
    ['Lim, Jongok & Terayama, Mamoru & Koh, Sanghyun & Lee, Jongwook', 2],
    ['Singh, Sudhir & Colombo, Wesley D. & Shreevihar, Santhosh', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=41)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);