function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ben-Dov, Yair', 1],
    ['Hardy, Nate B. & Williams, Douglas J.', 1],
    ['Hosseininaveh, Fatemeh & Nozari, Jamasb & Kaydan, Mehmet Bora', 4],
    ['Mifsud, David & Mazzeo, Gaetana & Russo, Agatino', 1],
    ['Moghaddam, Masumeh', 2],
    ['Novoa, Nereida Mestre & Hamon, Avas & Evans, Greg', 1],
    ['Schneider, Scott A. & Claps, Lucia E. & Wei, Jiufeng', 2],
    ['Smith-Pardo, Allan H. & Evans, Gregory A. & Dooley, John W.', 1],
    ['dos, Vera Regina & Wolff, Santos', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=15)',
    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);