function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Evans, Gregory A. & Abd-Rabou, Shaaban', 2],
    ['Gavrilov, Ilya A.', 1],
    ['Hodgson, Chris', 1],
    ['Kaydan, Mehmet Bora', 8],
    ['Kaydan, Mehmet Bora & Benedicty, Zsuzsanna Konczne', 2],
    ['MOGHADDAM, MASUMEH & WATSON, GILLIAN W.', 3],
    ['Mifsud, David & Mazzeo, Gaetana & Russo, Agatino', 1],
    ['Moghaddam, Masumeh', 10],
    ['Stalažs, Arturs', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=29)',
    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);