function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Angyal, Dorottya & Balazs, Gergely & Zaksek, Valerija', 2],
    ['Bargrizaneh, Zeinab & Fišer, Cene & Esmaeili-Rineh, Somayeh', 2],
    ['Delić, Teo & Švara, Vid & Coleman, Charles Oliver', 7],
    ['Dole-Olivier, Marie-José & Galassi, Diana M. P. & Fiers, Frank', 5],
    ['Esmaeili-Rineh, Somayeh & Mirghaffari, Seyyed Ahmad', 2],
    ['Esmaeili-Rineh, Somayeh & Sari, Alireza', 2],
    ['Esmaeili-Rineh, Somayeh & Sari, Alireza & Fišer, Cene', 4],
    ['Fiser, Cene & Alther, Roman & Zaksek, Valerija & Borko, Spela', 2],
    ['Fišer, Cene & Zagmajster, Maja & Dethier, Michel', 10],
    ['Hekmatara, M. & Zakšek, V. & Baladehi, M. Heidari & Fišer, C.', 2],
    ['Karaman, Gordan S.', 10],
    ['Karaman, Gordan S. & Borowsky, Betty & Dattagupta, Sharmishtha', 2],
    ['Karaman, Gordan S. & Sket, Boris', 3],
    ['Marin, Ivan & Barjadze, Shalva & Maghradze, Eter', 3],
    ['Ntakis, Alexandros & Karaouzas, Ioannis & Fišer, Cene', 24],
    ['Other (19)', 21]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=101)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);