function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida, Ana C. S. & Souza, Facelucia B. C. & Sanner, Joann', 2],
    ['D’Hondt, J. - L.', 1],
    ['Hirose, Masato', 6],
    ['Liow, Lee Hsiang & Gordon, Dennis P.', 8],
    ['Martino, Emanuela Di & Taylor, Paul D.', 1],
    ['Ramalho, Laís V. & Rodríguez-Aporta, Raquel & Gofas, Serge', 1],
    ['Zágoršek, Kamil & Gordon, Dennis P.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=20)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);