function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Cavallari, Daniel C. & Dornellas, Ana Paula S.', 1],
    ['Dolin, Luc & Biosca-Munts, Josep & Parcerisa, David', 2],
    ['Dolin, Luc & Ledon, Daniel', 9],
    ['Fehse, Dirk', 2],
    ['Lorenz, Felix', 1],
    ['Pacaud, J. - M.', 2],
    ['Röding, Peter Friedrich', 3],
    ['Simone, Luiz Ricardo L. & Cunha, Carlo M.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=22)',
    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);