function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Broad, Gavin R.', 28],
    ['Förster, A.', 3],
    ['Gauld, Ian D. & Fernández-Triana, José L.', 1],
    ['Humala, Andrei E.', 61],
    ['Humala, Andrei E. & Lee, Jong-Wook & Choi, Jin-Kyung', 27],
    ['Kolarov, J.', 3],
    ['Madl, Michael & O, Tersilochinae.', 6],
    ['Moreno, Alejandra González - & Bordera, Santiago', 1],
    ['Riedel & Pénigot & Schwarz & Diller & Johansson & Japoshvili, G.', 20],
    ['Rousse, Pascal & Villemant, Claire', 1],
    ['Spasojevic, Tamara & Broad, Gavin R. & Klopfstein, Seraina', 2],
    ['Telfer, Angela C & Young, Monica R & Quinn, Jenna & Perez, Kate', 1],
    ['Veijalainen, Anu & Broad, Gavin R. & Sääksjärvi, Ilari E.', 28]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=182)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);