function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Bakhshi, Mounes & Arzanlou, Mahdi & Babai-Ahari, Asadollah', 6],
    ['Meswaet, Yalemwork & Mangelsdorff, Ralph & Yorou, Nourou S.', 5],
    ['Singh, Archana & Singh, Paras Nath & Dubey, Nawal Kishore', 1],
    ['Wijayawardene, Nalin N. & Dai, Dong-Qin & Premarathne, Bhagya M.', 1],
    ['Yadav, Sanjay & Verma, Sanjeet Kumar & Singh, Vinay Kumar', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=14)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 5, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);