function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ali, Muhammad & Ahmed, Khalil & Ali, Shaukat & Raza, Ghulam', 1],
    ['Ali, Muhammad & Raza, Ghulam & Ali, Shaukat & Anjum, Syed Istiaq', 1],
    ['Ansi, Amin Al & Alkhalaf, Areej A. & Fadl, Hassan', 1],
    ['Coutanceau, Jean-Pierre', 1],
    ['Dejean, Pierre François Marie Auguste', 1],
    ['González F., Guillermo & Perla, Diego & Almeida, Lúcia M.', 3],
    ['Hounkpati, Kwevitoukoui & McHugh, Joseph V. & Niang, Abdoul Aziz', 3],
    ['Leeper, John R.', 1],
    ['Majka, Christopher G. & Mccorquodale, David B.', 1],
    ['POORANI, J.', 3],
    ['Poorani, J. & Lalitha, N.', 1],
    ['Szawaryn, Karol & Czerwiński, Tomasz', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);