function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bellan-Santini, Denise', 2],
    ['Ivan, Marin & Sergey, Sinelnikov & Agniya, Sokolova', 4],
    ['Just, Jean', 3],
    ['Karaman, Gordan S. & Barnard, J. Laurens', 1],
    ['Labay, Vjacheslav S.', 32],
    ['Marin, Ivan N. & Sinelnikov, Sergey Yu. & Antokhina, Tatiana I.', 1],
    ['Myers, A. A.', 1],
    ['Stebbing, Thomas R. R.', 2],
    ['Tomikawa, Ko & Hendrycks, Ed A. & Mawatari, Shunsuke F.', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=49)',
    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);