function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Kandari, Manal & Polikarpov, Igor & Nithyanandan, Manickam', 2],
    ['Hiwatari, Takehiko', 2],
    ['Momtazi, Farzaneh & Maghsoudlou, Abdolvahab', 1],
    ['Myers, Alan A. & Trivedi, Jigneshkumar N. & Gosavi, Swapnil', 1],
    ['Serejo, Cristiana S. & Sittrop, Daniela J.', 1],
    ['Thacker, Dimple & Myers, Alan A. & Trivedi, Jigneshkumar N.', 1],
    ['Thacker, Dimple & Patel, Krupal & Myers, Alan', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=11)',
    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);