function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Al-Kandari, Manal & Polikarpov, Igor & Nithyanandan, Manickam', 2],
    ['Alonso, G. M.', 2],
    ['Appadoo, C & Myers, A. A.', 3],
    ['Cházaro-Olvera, Sergio & Winfield, Ignacio & Ortiz, Manuel', 1],
    ['Hughes, Lauren E. & Lowry, James K.', 1],
    ['Jung, Tae Won & Choi, Hyun Ki & Kim, Min-Seop', 1],
    ['Kim, Kyung-Won & Zhang, Xin & Choi, Jae-Hong & Kim, Jun', 1],
    ['Myers, Alan A.', 1],
    ['Paz-Ríos, Carlos E. & Pech, Daniel', 2],
    ['Rousou, Maria & Plaiti, Wanda & Lowry, Jim', 1],
    ['Soto, Luis A. & Corona, Adriana', 1],
    ['Stebbing, Thomas R. R.', 1],
    ['Thacker, Dimple & Patel, Krupal & Myers, Alan', 4]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 13, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);