function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Barnes, R. S. K.', 16],
    ['Bom, Roeland A. & Ebbinge, Maaike', 1],
    ['Castro, Peter', 2],
    ['Davie, Peter J. F.', 1],
    ['Martin, Joel W. & Haney, Todd A.', 1],
    ['Mendoza, Jose Christopher E. & Naruse, Tohru', 1],
    ['Murniati, Dewi Citra & Asakura, Akira & Nugroho, Dharma Arif', 2],
    ['Naderloo, Reza & Türkay, Michael', 6],
    ['Naderloo, Reza & Türkay, Michael & Apel, Michael', 9],
    ['Nagai, Takashi & Watanabe, Tetsuya & Naruse, Tohru', 1],
    ['Naruse, Tohru & Kosuge, Takeharu', 1],
    ['Poupin, Joseph & Bouchard, Jean-Marie', 1],
    ['Rahayu, Dwi Listyo & Nugroho, Dharma Arif', 14],
    ['Takeda, Masatsune & Komai, Tomoyuki', 1],
    ['Teng, Shao-Jyun & Shih, Hsi-Te', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=61)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 15, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);