function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahmad-Hosseini, Mohammad & Khanjani, Mohammad & Karamian, Roya', 6],
    ['Akbari, Ali & Irani-Nejad, Karim Haddad & Khanjani, Mohammad', 1],
    ['Akyazi, Rana & Soysal, Mete & Altunç, Yunus Emre', 1],
    ['Darbemamieh, Maryam & Ahadiyat, Ali', 2],
    ['Darbemamieh, Maryam & Hajiqanbar, Hamidreza & Khanjani, Mohammad', 8],
    ['Darbemamieh, Maryam & Kaźmierski, Andrzej', 8],
    ['Ebrahimi, Najmeh & Noei, Javad', 3],
    ['Ripka, Geza & Laniecka, Izabella & Kazmierski, Andrzej', 4],
    ['Sousa, J. M. de & Gondim Jr., M. G. C. & Lofego, A. C.', 1],
    ['Ueckermann, Edward A. & Grout, Timothy G.', 5],
    ['UeckermannK, Edward A. & De VisK, Raf M. J. & ReybroeckK, Eva', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=45)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);