function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Broad, Gavin R.', 8],
    ['Horstmann, K.', 2],
    ['Kasparyan, Dmitri R. & Choi, Jin-Kyung & Kang, Gyu-Won', 6],
    ['Kolarov, J.', 2],
    ['M. F & Kirtay, H. & Birol, O.', 3],
    ['Moreno, Alejandra González - & Bordera, Santiago', 1],
    ['Spasojevic, Tamara & Broad, Gavin R. & Klopfstein, Seraina', 1],
    ['Yurtcan, M. & Kolarov, J. & Beyarslan, A.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);